{ "title": "Biotin × Falsely low TSH measurement bias", "criteria_version": "NGM-v3106-ORAL-BIOTIN-TSH-MEASUREMENT-1.0", "criteria_date": "2026-10-05", "method_sources": [ { "id": "M03", "version": "Cochrane Handbook 6.5 (2024), chapter updated 2023-08", "url": "https://www.cochrane.org/authors/handbooks-and-manuals/handbook/current/chapter-03", "section": "§3.1, §3.2.1–3.2.3, MECIR C5/C7/C13", "official_principle": "Clearly record the question, eligibility criteria and reasons for changes, and distinguish variations in the intervention.", "review_level": "This is a comparison of actual copies/SHA for case 1585's 5 original methodology HTML files, retaining their original bytes, and historical reuse of the principles from that time. It is not new reading of full methods texts, implementation of formal assessment tools or clinical certification." }, { "id": "M04", "version": "Cochrane Handbook 6.5.1 (2025), chapter updated 2025-03", "url": "https://www.cochrane.org/authors/handbooks-and-manuals/handbook/current/chapter-04", "section": "§4.5, §4.6.1–4.6.3, MECIR C42", "official_principle": "Distinguish and link studies and reports, and do not omit a study solely because its outcomes are not reported.", "review_level": "This is a comparison of actual copies/SHA for case 1585's 5 original methodology HTML files, retaining their original bytes, and historical reuse of the principles from that time. It is not new reading of full methods texts, implementation of formal assessment tools or clinical certification." }, { "id": "M08", "version": "Cochrane Handbook 6.5 (2024), chapter updated 2019-10", "url": "https://www.cochrane.org/authors/handbooks-and-manuals/handbook/current/chapter-08", "section": "§8.1–8.2.3, Table 8.2.a", "official_principle": "Hold the outcome and effect of interest fixed, then assess randomization, deviations, missing data, measurement and selective reporting.", "review_level": "This is a comparison of actual copies/SHA for case 1585's 5 original methodology HTML files, retaining their original bytes, and historical reuse of the principles from that time. It is not new reading of full methods texts, implementation of formal assessment tools or clinical certification." }, { "id": "M15", "version": "Cochrane Handbook 6.5 (2024), chapter updated 2023-08", "url": "https://www.cochrane.org/authors/handbooks-and-manuals/handbook/current/chapter-15", "section": "§15.2.4, §15.3.1–15.3.3", "official_principle": "Distinguish effect estimates, intervals, importance and applicability. Sample size alone does not determine precision.", "review_level": "This is a comparison of actual copies/SHA for case 1585's 5 original methodology HTML files, retaining their original bytes, and historical reuse of the principles from that time. It is not new reading of full methods texts, implementation of formal assessment tools or clinical certification." }, { "id": "M19", "version": "Cochrane Handbook 6.5 (2024), chapter updated 2019-10", "url": "https://www.cochrane.org/authors/handbooks-and-manuals/handbook/current/chapter-19", "section": "§19.1.2, §19.2.1–19.2.4", "official_principle": "Questions about harms may require designs, populations and follow-up different from efficacy questions. Case reports do not establish incidence.", "review_level": "This is a comparison of actual copies/SHA for case 1585's 5 original methodology HTML files, retaining their original bytes, and historical reuse of the principles from that time. It is not new reading of full methods texts, implementation of formal assessment tools or clinical certification." } ], "status_dictionary": { "Met": "The record meets the specified narrow conditions for measurement identity, attribution/units, version/reading and display. This does not establish efficacy, absence of interference or individual safety, or verify that the external full text has been checked in the current review.", "Partly verified": "Relevant retained observations exist, but some necessary methods, reagents/versions, denominators, quantitative intervals or comparisons against original sources remain unverified.", "Unverified": "The value could not be established from the currently retained materials and the scope verified at that time. This does not mean bias 0, normality, absence/failure of data or absence of interference.", "Not reported": "Used only within the scope of non-reporting in sections actually read or in the historical summaries currently specified. It is not extended to entire external full texts that remain unread in this review.", "Conflicting information": "Specify retained discrepancies or possible errors concerning the same fact in each row. Different platforms, time points or formal contrasts/simple differences do not in themselves constitute a conflict.", "Inaccessible": "Used only for an actual access failure in this review. No external access was attempted in this review, so historical failures are not carried over as current status.", "Review incomplete": "Limited to the scope in which comparison against current external materials has not been performed. It does not mean that the entire review of the retained JSON and model, which was actually completed, is incomplete.", "Not applicable": "Limited to other analytes outside the required outcomes of the narrow TSH question. This is not a substitute for unread/unverified status, or certification of no interference or safety." }, "schema_version": "chamgap-public-criteria-1.0", "condition_origin": "Chamgap’s own application conditions", "requirements": [ { "item_id": "N01", "question_type": "Measurement-only display", "question": "Does this table address a measurement question and prevent the application of efficacy grades and scores?", "needed": "Measurement-only classification, fields marking efficacy as not applicable, and a display contract prohibiting efficacy badges/aggregate ratings/a universal stopping interval", "role": "Required", "role_reason": "This is needed to prevent falsely low measurements from being recast as treatment effects or an aggregate grade.", "application_exception": "The original grade ?·score null and document quality B are historical values. Blue in the condition status indicates verification of a narrow documentation condition, not an efficacy badge.", "criterion": "Preserve measurement_only, the measurement type, the non-applicability of efficacy grade/score/axes, and the original display_contract unchanged.", "basis": "C01: Question clarification principles in M03 §3.1, §3.2.1–3.2.4; the detailed separation rules are internally designed / C09: M04 §4.5, §4.6.3; limits on the current data transformation follow the user-defined scope and are internally designed / D01: Chamgap's own diagnostic condition; M03 question/population principles serve only as general references. Reason for application to the measurement family: This is needed to prevent falsely low measurements from being recast as treatment effects or an aggregate grade. This is not a formal implementation of diagnostic/QUADAS/STARD·RoB/GRADE/causality methods or clinical certification.", "condition_origin": "A condition developed specifically for this case after actually reading the current measurement materials. This is an individual adaptation of the meaning of a definition, not an automatic copy, blinded assessment or clinical preregistration.", "proposed_research": "Cross-check the display paths for measurements, reagent performance, document quality and patient outcomes separately to prevent conflated labeling." }, { "item_id": "N02", "question_type": "Separate question and family", "question": "Which exposure, specimen, comparison and measurement outcome are brought together in one table?", "needed": "The original claim and a fixed question specified by healthy adults, oral exposure, serum TSH, platform/reagent, dose and blood sampling time", "role": "Required", "role_reason": "This is needed to avoid conflating thyroid disease, other analytes and all test interference with this TSH measurement bias.", "application_exception": "Even when some concepts from the diagnostic accuracy family are used as references, the question is not changed into one about sensitivity/specificity or a clinical treatment trial.", "criterion": "Fix the oral exposure, serum TSH, assay-specific falsely low readings and actual within-person/same-specimen comparisons, and distinguish questions that extend beyond them.", "basis": "C01: Question clarification principles in M03 §3.1, §3.2.1–3.2.4; the detailed separation rules are internally designed / C04: M03 §3.2.1; detailed population conditions are internally designed / C05: M03 §3.2.2–3.2.3; reverse-direction labeling and adaptations for testing are internally designed / C06: M03 §3.2.4, M15 §15.3.1–15.3.3; question-specific outcome adaptations are internally designed / D01: Chamgap's own diagnostic condition; M03 question/population principles serve only as general references / D09: Chamgap's own boundary for diagnostic extensions; formal diagnostic methodology evidence has not been reviewed / E09: M03 §3.2.4; internally designed boundary for extensions. Reason for application to the measurement family: This is needed to avoid conflating thyroid disease, other analytes and all test interference with this TSH measurement bias. This is not a formal implementation of diagnostic/QUADAS/STARD·RoB/GRADE/causality methods or clinical certification.", "condition_origin": "A condition developed specifically for this case after actually reading the current measurement materials. This is an individual adaptation of the meaning of a definition, not an automatic copy, blinded assessment or clinical preregistration.", "proposed_research": "Construct a matrix of platform, reagent, exposure and time point, and cross-check measurement bias separately from physiological changes/clinical outcomes." }, { "item_id": "N03", "question_type": "Analyte and units", "question": "Which TSH measure in which specimen does the observed outcome represent?", "needed": "Serum TSH analyte, units, time-point/contrast definitions, and separate blood biotin units", "role": "Required", "role_reason": "This is needed to avoid substituting blood biotin concentrations, TSH measurements or disease status for one another.", "application_exception": "Keep blood biotin in pg/mL and reagent-document values in ng/mL, and TSH in mIU/L and document values in µIU/mL, each in its original units. No new conversions are performed.", "criterion": "Assign assay-specific serum TSH time-point means, formal contrasts and reference-limit crossings to their respective original units/time points.", "basis": "C06: M03 §3.2.4, M15 §15.3.1–15.3.3; question-specific outcome adaptations are internally designed / D03: Chamgap's own diagnostic condition; formal diagnostic methodology evidence has not been reviewed. Reason for application to the measurement family: This is needed to avoid substituting blood biotin concentrations, TSH measurements or disease status for one another. This is not a formal implementation of diagnostic/QUADAS/STARD·RoB/GRADE/causality methods or clinical certification.", "condition_origin": "A condition developed specifically for this case after actually reading the current measurement materials. This is an individual adaptation of the meaning of a definition, not an automatic copy, blinded assessment or clinical preregistration.", "proposed_research": "Cross-check analytes, units and measures against each original table/document without generating new converted values or clinical status classifications." }, { "item_id": "N04", "question_type": "Exposure product and chemical form", "question": "Are the actual form, batch and total exposure to the biotin supplement known?", "needed": "Exact chemical form, formulation, batch, purity and dosing records for the study product, and total dietary exposure data", "role": "Required", "role_reason": "This is needed to avoid extending the name biotin and the nominal dose to the composition, purity and actual intake of all supplements.", "application_exception": "Unverified manufacturing source, chemical form, tablet/capsule, batch and dietary exposure do not constitute a finding that a particular product is defective.", "criterion": "Distinguish each study's supplement exposure from unverified product/dietary details.", "basis": "C05: M03 §3.2.2–3.2.3; reverse-direction labeling and adaptations for testing are internally designed / H05: Design considerations in M19 §19.2.2–19.2.4; detailed confounding records are internally designed. Reason for application to the measurement family: This is needed to avoid extending the name biotin and the nominal dose to the composition, purity and actual intake of all supplements. This is not a formal implementation of diagnostic/QUADAS/STARD·RoB/GRADE/causality methods or clinical certification.", "condition_origin": "A condition developed specifically for this case after actually reading the current measurement materials. This is an individual adaptation of the meaning of a definition, not an automatic copy, blinded assessment or clinical preregistration.", "proposed_research": "Link study product specifications and actual intake records to measurements by platform/time point to compare differences between products." }, { "item_id": "N05", "question_type": "Oral dose and timeline", "question": "Were dosing duration and the interval from the last dose to blood sampling distinguished?", "needed": "Nominal oral dose, dosing start/end, actual last dose and blood sampling times for each trial", "role": "Required", "role_reason": "This is needed to avoid treating 7-day/8-day exposure and blood sampling after 2 hours/5 hours/8 hours as the same timeline.", "application_exception": "The tested 5/10 mg doses are not interpreted as safe doses, optimal doses or personal dosing/stopping instructions.", "criterion": "Retain the oral dose, dosing duration, assessment day and post-dose blood sampling time for Li, Zhang and Ylli separately by study.", "basis": "C05: M03 §3.2.2–3.2.3; reverse-direction labeling and adaptations for testing are internally designed / C06: M03 §3.2.4, M15 §15.3.1–15.3.3; question-specific outcome adaptations are internally designed / H02: Design-specific harm questions in M19 §19.2; details of temporal relationships are internally designed / E08: M03 §3.2.1–3.2.4; details of dose, duration and effect modification are internally designed. Reason for application to the measurement family: This is needed to avoid treating 7-day/8-day exposure and blood sampling after 2 hours/5 hours/8 hours as the same timeline. This is not a formal implementation of diagnostic/QUADAS/STARD·RoB/GRADE/causality methods or clinical certification.", "condition_origin": "A condition developed specifically for this case after actually reading the current measurement materials. This is an individual adaptation of the meaning of a definition, not an automatic copy, blinded assessment or clinical preregistration.", "proposed_research": "Cross-check dose, dosing duration, last dose and blood sampling time against the original records as separate axes." }, { "item_id": "N06", "question_type": "Population and representativeness", "question": "To which populations can the measurements in healthy adults be applied?", "needed": "Recruitment/selection, baseline thyroid/renal function, age/sex composition and special-population data for each trial", "role": "Required", "role_reason": "This is needed to avoid extending a small sample of healthy people to all patients, people with renal impairment, pregnant people, children and high-dose treatment groups.", "application_exception": "The description of participants as healthy adults alone does not verify recruitment representativeness, sex/age composition and exclusion criteria in full.", "criterion": "Distinguish each study's actually reported population from unverified selection/baseline characteristics and limitations concerning special populations.", "basis": "C04: M03 §3.2.1; detailed population conditions are internally designed / D02: Chamgap's own diagnostic sampling condition; formal diagnostic methodology evidence has not been reviewed / H08: M19 §19.1.2–19.2.4; internal application. Reason for application to the measurement family: This is needed to avoid extending a small sample of healthy people to all patients, people with renal impairment, pregnant people, children and high-dose treatment groups. This is not a formal implementation of diagnostic/QUADAS/STARD·RoB/GRADE/causality methods or clinical certification.", "condition_origin": "A condition developed specifically for this case after actually reading the current measurement materials. This is an individual adaptation of the meaning of a definition, not an automatic copy, blinded assessment or clinical preregistration.", "proposed_research": "Cross-check population composition and baseline status against exposure/measurement conditions, and assess applicability to other populations using direct data from those populations." }, { "item_id": "N07", "question_type": "Li participants and specimens", "question": "What denominators do Li's 6 people and 18 time-point specimens represent?", "needed": "Li's participant count, time-point specimen count, and measurement/analysis and exclusion flow by platform", "role": "Required", "role_reason": "This is needed to avoid overstating sample size and precision by counting repeated specimens as independent participants.", "application_exception": "Verification of 18 specimens does not mean that missingness and exclusion flows were verified for every assay/time point.", "criterion": "Distinguish repeated measurements within the same 6 people from the 18 time-point specimens, and retain gaps in the actual analysis flow.", "basis": "C07: M08 Table 8.2.a, M15 §15.3, M19 §19.1.2–19.2.4; design-specific adaptations are internally designed / D06: Chamgap's own diagnostic condition; formal diagnostic methodology evidence has not been reviewed. Reason for application to the measurement family: This is needed to avoid overstating sample size and precision by counting repeated specimens as independent participants. This is not a formal implementation of diagnostic/QUADAS/STARD·RoB/GRADE/causality methods or clinical certification.", "condition_origin": "A condition developed specifically for this case after actually reading the current measurement materials. This is an individual adaptation of the meaning of a definition, not an automatic copy, blinded assessment or clinical preregistration.", "proposed_research": "Cross-check the correspondence among participants, specimens, platforms and time points against the original flow/tables to verify the unit of analysis." }, { "item_id": "N08", "question_type": "Zhang's same participants", "question": "Do Zhang's two doses represent trials with different groups of 10 people each?", "needed": "Identity of the same participants, exposure order and duration, and analysis flow by dose/platform/time point", "role": "Required", "role_reason": "This is needed to avoid counting fixed-sequence exposures in the same participants as 20 people or two independent trials.", "application_exception": "The results at the two doses are not recast as a randomized dose comparison or an estimate of interaction between doses.", "criterion": "Retain the same 10 people, the fixed sequence of 7 days each, and the unverified numbers of analyzed specimens by platform/time point.", "basis": "C02: Distinction between studies and reports in M04 §4.6.1–4.6.2; cohort/outcome linkage is an internal application / C07: M08 Table 8.2.a, M15 §15.3, M19 §19.1.2–19.2.4; design-specific adaptations are internally designed / D06: Chamgap's own diagnostic condition; formal diagnostic methodology evidence has not been reviewed. Reason for application to the measurement family: This is needed to avoid counting fixed-sequence exposures in the same participants as 20 people or two independent trials. This is not a formal implementation of diagnostic/QUADAS/STARD·RoB/GRADE/causality methods or clinical certification.", "condition_origin": "A condition developed specifically for this case after actually reading the current measurement materials. This is an individual adaptation of the meaning of a definition, not an automatic copy, blinded assessment or clinical preregistration.", "proposed_research": "Cross-check exposure order, washout intervals and period effects within the same people to verify the dependence of repeated measurements." }, { "item_id": "N09", "question_type": "Ylli enrollment and analysis", "question": "Do Ylli's 13 people constitute the analysis denominator for every TSH value?", "needed": "Ylli's enrollment/completion/TSH analysis denominators, and specimen flow for each original quantitative table and figure", "role": "Required", "role_reason": "This is needed to avoid automatically inserting the enrollment count in the abstract as the analysis denominator for full-text tables.", "application_exception": "Retain the direction reported in the figure captions and abstract, without reconstructing quantitative full-text tables that could not be accessed.", "criterion": "Distinguish the enrollment of 13 adults and the scope of the abstract/figure captions from the unverified detailed TSH analysis denominators.", "basis": "C07: M08 Table 8.2.a, M15 §15.3, M19 §19.1.2–19.2.4; design-specific adaptations are internally designed / D06: Chamgap's own diagnostic condition; formal diagnostic methodology evidence has not been reviewed / C03: Data collection/selection principles in M04 §4.5–4.6; the separation of access and reading and the hyperlink contract are internally designed. Reason for application to the measurement family: This is needed to avoid automatically inserting the enrollment count in the abstract as the analysis denominator for full-text tables. This is not a formal implementation of diagnostic/QUADAS/STARD·RoB/GRADE/causality methods or clinical certification.", "condition_origin": "A condition developed specifically for this case after actually reading the current measurement materials. This is an individual adaptation of the meaning of a definition, not an automatic copy, blinded assessment or clinical preregistration.", "proposed_research": "Map enrollment counts and analysis populations/time points to the original tables to verify the scope of missingness and exclusions." }, { "item_id": "N10", "question_type": "Design and exposure order", "question": "What comparisons does the actual design provide, and what does it fail to control?", "needed": "Actual exposure order, concurrent changes, control of background factors, and measurement/reading conditions", "role": "Required", "role_reason": "This is needed to avoid presenting within-person exposure comparisons as randomized placebo efficacy trials.", "application_exception": "Direct measurement results are not removed merely because the design is nonrandomized. The existence of a clinical RCT is not an essential prerequisite for measurement bias.", "criterion": "Retain Li's nonrandomized repeated measurements, Zhang's fixed sequence and Ylli's prospective within-person comparison, along with limitations concerning time/concurrent changes.", "basis": "E01: M08 §8.1–8.2.3; internal application / E04: M08 §8.2.2, M15 §15.3.1; internal application / D05: Chamgap's own diagnostic condition; formal diagnostic methodology evidence has not been reviewed / H05: Design considerations in M19 §19.2.2–19.2.4; detailed confounding records are internally designed. Reason for application to the measurement family: This is needed to avoid presenting within-person exposure comparisons as randomized placebo efficacy trials. This is not a formal implementation of diagnostic/QUADAS/STARD·RoB/GRADE/causality methods or clinical certification.", "condition_origin": "A condition developed specifically for this case after actually reading the current measurement materials. This is an individual adaptation of the meaning of a definition, not an automatic copy, blinded assessment or clinical preregistration.", "proposed_research": "Distinguish comparisons across time points within the same people from comparisons of concurrent specimens to assess the effects of order, time and background changes." }, { "item_id": "N11", "question_type": "Comparison reference", "question": "What comparison references do pre-exposure/post-washout measurements and other platforms provide?", "needed": "Definitions of time contrasts, and analytical principles and traceability/reference-method information for comparisons using the same specimens", "role": "Required", "role_reason": "This is needed to avoid confusing differences between assays with established diagnostic criteria for patients' thyroid conditions.", "application_exception": "Even a biotin-independent method does not automatically establish an independent physiological TSH true value or a gold standard for clinical disease.", "criterion": "Link within-person time contrasts and comparator platforms using specimens from the same time point separately, and explain the limitations of the reference methods.", "basis": "C05: M03 §3.2.2–3.2.3; reverse-direction labeling and adaptations for testing are internally designed / C06: M03 §3.2.4, M15 §15.3.1–15.3.3; question-specific outcome adaptations are internally designed / D04: Chamgap's own diagnostic condition; formal diagnostic methodology evidence has not been reviewed / E04: M08 §8.2.2, M15 §15.3.1; internal application. Reason for application to the measurement family: This is needed to avoid confusing differences between assays with established diagnostic criteria for patients' thyroid conditions. This is not a formal implementation of diagnostic/QUADAS/STARD·RoB/GRADE/causality methods or clinical certification.", "condition_origin": "A condition developed specifically for this case after actually reading the current measurement materials. This is an individual adaptation of the meaning of a definition, not an automatic copy, blinded assessment or clinical preregistration.", "proposed_research": "Cross-check paired time contrasts and assay differences in specimens from the same time point separately, and distinguish them from determining a clinical true value." }, { "item_id": "N12", "question_type": "Analytical principles and instruments", "question": "Were the principles and instrument identities of the TSH assays distinguished?", "needed": "Instruments, reagents, principles, specimen procedures and interference tolerance thresholds for each analyte", "role": "Required", "role_reason": "This is needed to avoid treating interference on all instruments as identical solely because methods are described as sandwich or biotin-dependent.", "application_exception": "Vista uses a biotin-dependent TSH assay, yet there was no significant difference at the exposure tested. A positive finding is not assigned on the basis of the principle alone.", "criterion": "Link the TSH results from Roche, Ortho, Siemens, Abbott and Beckman separately to the level of verification of their principles/versions.", "basis": "C05: M03 §3.2.2–3.2.3; reverse-direction labeling and adaptations for testing are internally designed / C06: M03 §3.2.4, M15 §15.3.1–15.3.3; question-specific outcome adaptations are internally designed / D03: Chamgap's own diagnostic condition; formal diagnostic methodology evidence has not been reviewed / E03: M08 Table 8.2.a, M03 §3.2.4; internal application. Reason for application to the measurement family: This is needed to avoid treating interference on all instruments as identical solely because methods are described as sandwich or biotin-dependent. This is not a formal implementation of diagnostic/QUADAS/STARD·RoB/GRADE/causality methods or clinical certification.", "condition_origin": "A condition developed specifically for this case after actually reading the current measurement materials. This is an individual adaptation of the meaning of a definition, not an automatic copy, blinded assessment or clinical preregistration.", "proposed_research": "Cross-check not only instrument names but also the TSH reagents' capture/detection methods against the results at the exposure tested." }, { "item_id": "N13", "question_type": "Historical reagents and current installations", "question": "Are historical tests and current reagents with the same instrument name being treated as identical?", "needed": "Reagent lots and method versions at the time of the trial, revision histories and actual laboratory installation records", "role": "Required", "role_reason": "This is needed to avoid automatically transferring interference in historical trials to revised reagents or the versions currently installed in all laboratories.", "application_exception": "The existence of a Roche 2024 document does not verify actual installations in individual laboratories or equivalence to historical lots.", "criterion": "Separate the unverified historical reagents/lots from the known identity of the 2024-10 V2.0 document.", "basis": "C05: M03 §3.2.2–3.2.3; reverse-direction labeling and adaptations for testing are internally designed / D03: Chamgap's own diagnostic condition; formal diagnostic methodology evidence has not been reviewed / D08: Chamgap's own diagnostic applicability condition; M04 principles distinguishing reports/studies serve as general references / C09: M04 §4.5, §4.6.3; limits on the current data transformation follow the user-defined scope and are internally designed. Reason for application to the measurement family: This is needed to avoid automatically transferring interference in historical trials to revised reagents or the versions currently installed in all laboratories. This is not a formal implementation of diagnostic/QUADAS/STARD·RoB/GRADE/causality methods or clinical certification.", "condition_origin": "A condition developed specifically for this case after actually reading the current measurement materials. This is an individual adaptation of the meaning of a definition, not an automatic copy, blinded assessment or clinical preregistration.", "proposed_research": "Map instruments, reagents, versions and installation dates to verify identity/differences between historical trials and current documents." }, { "item_id": "N14", "question_type": "Li formal contrast", "question": "Which repeated-measures contrast does Li's formal estimate represent?", "needed": "Formal repeated-measures contrast formula and model, and original estimates/CI/P for each platform", "role": "Required", "role_reason": "This is needed to avoid confusing the simple difference obtained by subtracting the day 7 mean from the baseline mean with the formal contrast in the original model.", "application_exception": "The formal 95% CI is not converted to SD or SE, and no model is newly fitted without the original data.", "criterion": "Link the within-person repeated-measures contrast day 7 − mean(day 0, day 14) to the estimates for each platform.", "basis": "C06: M03 §3.2.4, M15 §15.3.1–15.3.3; question-specific outcome adaptations are internally designed / E04: M08 §8.2.2, M15 §15.3.1; internal application / E05: M15 §15.3.1–15.3.3; internal application. Reason for application to the measurement family: This is needed to avoid confusing the simple difference obtained by subtracting the day 7 mean from the baseline mean with the formal contrast in the original model. This is not a formal implementation of diagnostic/QUADAS/STARD·RoB/GRADE/causality methods or clinical certification.", "condition_origin": "A condition developed specifically for this case after actually reading the current measurement materials. This is an individual adaptation of the meaning of a definition, not an automatic copy, blinded assessment or clinical preregistration.", "proposed_research": "Cross-check the original contrast formula and time-point means to distinguish formal model results from historical simple arithmetic values." }, { "item_id": "N15", "question_type": "Li Roche values", "question": "Were Li Roche's formal bias and historical simple difference distinguished?", "needed": "Li Roche TSH time-point means, formal contrast, original CI/P and display of historical arithmetic", "role": "Required", "role_reason": "This is needed to avoid treating values from different contrast definitions as an error requiring correction or as the same estimate.", "application_exception": "−0.59 is the historical simple difference in the manuscript, not a new calculation in this review. It is not combined with the formal CI.", "criterion": "Link 1.80→1.21→2.06 and the formal −0.72/CI/P only to Roche cobas e602 and the corresponding time points.", "basis": "C06: M03 §3.2.4, M15 §15.3.1–15.3.3; question-specific outcome adaptations are internally designed / C07: M08 Table 8.2.a, M15 §15.3, M19 §19.1.2–19.2.4; design-specific adaptations are internally designed / E04: M08 §8.2.2, M15 §15.3.1; internal application / E05: M15 §15.3.1–15.3.3; internal application / C08: M04 §4.6.3, M15 §15.3.1–15.3.3; status separation is internally designed. Reason for application to the measurement family: This is needed to avoid treating values from different contrast definitions as an error requiring correction or as the same estimate. This is not a formal implementation of diagnostic/QUADAS/STARD·RoB/GRADE/causality methods or clinical certification.", "condition_origin": "A condition developed specifically for this case after actually reading the current measurement materials. This is an individual adaptation of the meaning of a definition, not an automatic copy, blinded assessment or clinical preregistration.", "proposed_research": "Map platform/time-point means and the formal contrast definition to the original table to verify the roles of the different values." }, { "item_id": "N16", "question_type": "Li Ortho values", "question": "What is the scope of Li's VITROS values and observations relative to the lower reference limit?", "needed": "VITROS time-point means, formal contrast/CI/P and the method's lower reference limit", "role": "Required", "role_reason": "This is needed to avoid turning platform-specific bias magnitudes and lower-limit crossings into findings for other assays or clinical disease incidence.", "application_exception": "The fact that all 6 participants were below the lower limit is an observation in a small measurement sample, not a population frequency.", "criterion": "Preserve the means, formal contrast, CI/P and original lower reference limit for Ortho VITROS 5600.", "basis": "C06: M03 §3.2.4, M15 §15.3.1–15.3.3; outcome adaptations for each question are internally designed / E04: M08 §8.2.2, M15 §15.3.1; internal application / E05: M15 §15.3.1–15.3.3; internal application / D03: Chamgap's internally designed diagnostic condition; formal diagnostic-method evidence not reviewed. Reason for application to the measurement family: This is needed to avoid turning platform-specific bias magnitudes and lower-limit crossings into findings for other assays or clinical disease incidence. This is not formal implementation of diagnostic/QUADAS/STARD, RoB/GRADE or causality assessments, or clinical certification.", "condition_origin": "A condition developed specifically for this case after actually reading the current measurement materials. This is an individual adaptation of the meaning of a definition, not an automatic copy, blinded assessment or clinical preregistration.", "proposed_research": "Distinguish the original formal contrast from individual reference-limit crossings and attribute them to the platform's measurement results." }, { "item_id": "N17", "question_type": "Boundaries for reference limits and misdiagnosis rates", "question": "Was crossing the lower reference limit expressed as sensitivity, specificity or an actual misdiagnosis rate?", "needed": "The method's reference limit, individual measurements and actual clinical assessments/follow-up outcome data", "role": "Required", "role_reason": "This is needed to distinguish an observation of assay values crossing the lower limit from the frequency of diagnoses/harms in patients.", "application_exception": "A measurement-bias question does not unconditionally require disease TP/FP/FN/TN tables or clinical outcome trials.", "criterion": "Separate lower-limit crossings under the test conditions from clinical disease, misdiagnosis and harm rates, and diagnostic accuracy.", "basis": "D03: Chamgap's internally designed diagnostic condition; formal diagnostic-method evidence not reviewed / D07: Chamgap's internally designed diagnostic-outcome condition; formal diagnostic-method evidence not reviewed / D09: Chamgap's internally designed boundary for diagnostic extensions; formal diagnostic-method evidence not reviewed / H04: M19 §19.1.2–19.2.4; internal application / H09: Chamgap's internally designed interpretation boundary. References M19 principles; not implementation of a formal causality tool. Reason for application to the measurement family: This is needed to distinguish an observation of assay values crossing the lower limit from the frequency of diagnoses/harms in patients. This is not formal implementation of diagnostic/QUADAS/STARD, RoB/GRADE or causality assessments, or clinical certification.", "condition_origin": "A condition developed specifically for this case after actually reading the current measurement materials. This is an individual adaptation of the meaning of a definition, not an automatic copy, blinded assessment or clinical preregistration.", "proposed_research": "Compare assay reference-limit crossings, independent clinical status and post-test actions separately; do not estimate patient rates without that connection." }, { "item_id": "N18", "question_type": "Li Vista contrary observation", "question": "Was the nonsignificant result for biotin-dependent Vista also preserved?", "needed": "Vista's original assay principle, paired estimate, CI/P and the exposure conditions", "role": "Required", "role_reason": "This is needed to avoid deleting a negative result that appears inconsistent with the principle or converting it into an effect of 0.", "application_exception": "P = 0.56 does not verify equivalence or absence of bias.", "criterion": "Preserve the Vista formal contrast and CI/P from the same Li specimens together with its biotin-dependent principle.", "basis": "C08: M04 §4.6.3, M15 §15.3.1–15.3.3; separation of statuses is internally designed / E05: M15 §15.3.1–15.3.3; internal application / D03: Chamgap's internally designed diagnostic condition; formal diagnostic-method evidence not reviewed. Reason for application to the measurement family: This is needed to avoid deleting a negative result that appears inconsistent with the principle or converting it into an effect of 0. This is not formal implementation of diagnostic/QUADAS/STARD, RoB/GRADE or causality assessments, or clinical certification.", "condition_origin": "A condition developed specifically for this case after actually reading the current measurement materials. This is an individual adaptation of the meaning of a definition, not an automatic copy, blinded assessment or clinical preregistration.", "proposed_research": "Relate the negative observation and the range of bias still compatible with it to the original interval/exposure conditions, distinguishing them from other platforms." }, { "item_id": "N19", "question_type": "Li Abbott comparator method", "question": "Was Li's nonsignificant Abbott estimate kept within the scope of the comparator method?", "needed": "Abbott's original comparator method, exposure conditions, paired estimate and CI/P", "role": "Required", "role_reason": "This is needed to avoid extending a negative observation on the comparator platform into a guarantee of no interference under all conditions.", "application_exception": "Do not count another assay on the same specimens as an additional human trial or independent participants.", "criterion": "Attribute the Abbott ARCHITECT 2000 formal contrast, interval and P to the same Li specimens.", "basis": "C08: M04 §4.6.3, M15 §15.3.1–15.3.3; separation of statuses is internally designed / D04: Chamgap's internally designed diagnostic condition; formal diagnostic-method evidence not reviewed / E05: M15 §15.3.1–15.3.3; internal application. Reason for application to the measurement family: This is needed to avoid extending a negative observation on the comparator platform into a guarantee of no interference under all conditions. This is not formal implementation of diagnostic/QUADAS/STARD, RoB/GRADE or causality assessments, or clinical certification.", "condition_origin": "A condition developed specifically for this case after actually reading the current measurement materials. This is an individual adaptation of the meaning of a definition, not an automatic copy, blinded assessment or clinical preregistration.", "proposed_research": "Verify the original results by distinguishing platform comparisons on the same specimens from time contrasts with pre-exposure/post-washout measurements." }, { "item_id": "N20", "question_type": "Zhang Roche doses and time points", "question": "At which doses and blood-draw times was lower Roche TSH observed in Zhang?", "needed": "Zhang's original Roche mean differences, variances, CIs, denominators and reported P by time point/dose", "role": "Required", "role_reason": "This is needed to avoid turning the direction associated with a P value into a quantitative bias magnitude or a direct effect between doses.", "application_exception": "Exact mean differences and CIs are unverified. Do not extract new values from graphs or search summaries.", "criterion": "Preserve the reported P and decreases by dose/time point in the same 10 participants, leaving unverified estimates unverified.", "basis": "C06: M03 §3.2.4, M15 §15.3.1–15.3.3; outcome adaptations for each question are internally designed / E05: M15 §15.3.1–15.3.3; internal application / E08: M03 §3.2.1–3.2.4; dose, duration and effect-modification details are internally designed / H02: design-specific harm questions in M19 §19.2; temporal-relationship details are internally designed. Reason for application to the measurement family: This is needed to avoid turning the direction associated with a P value into a quantitative bias magnitude or a direct effect between doses. This is not formal implementation of diagnostic/QUADAS/STARD, RoB/GRADE or causality assessments, or clinical certification.", "condition_origin": "A condition developed specifically for this case after actually reading the current measurement materials. This is an individual adaptation of the meaning of a definition, not an automatic copy, blinded assessment or clinical preregistration.", "proposed_research": "Attribute results versus baseline at each dose to their time point/assay, and check whether separate direct estimates exist for comparisons between doses." }, { "item_id": "N21", "question_type": "Zhang platforms with negative findings", "question": "Were Zhang's negative TSH observations on Beckman and Abbott preserved by analyte?", "needed": "Each TSH method's reagents/principle, original results by dose/time and separate tables for other analytes", "role": "Required", "role_reason": "This is needed to avoid transferring interference in other thyroid analytes on the same instrument to TSH results.", "application_exception": "Nonuse of biotin-streptavidin is retained information about those TSH methods, not a guarantee for all instruments/versions.", "criterion": "Distinguish the negative observations and principles for Beckman UniCel DxI 800 and Abbott ARCHITECT 2000 TSH.", "basis": "C08: M04 §4.6.3, M15 §15.3.1–15.3.3; separation of statuses is internally designed / C06: M03 §3.2.4, M15 §15.3.1–15.3.3; outcome adaptations for each question are internally designed / D03: Chamgap's internally designed diagnostic condition; formal diagnostic-method evidence not reviewed / D08: Chamgap's internally designed diagnostic-applicability condition; general reference to M04 principles for distinguishing reports/studies. Reason for application to the measurement family: This is needed to avoid transferring interference in other thyroid analytes on the same instrument to TSH results. This is not formal implementation of diagnostic/QUADAS/STARD, RoB/GRADE or causality assessments, or clinical certification.", "condition_origin": "A condition developed specifically for this case after actually reading the current measurement materials. This is an individual adaptation of the meaning of a definition, not an automatic copy, blinded assessment or clinical preregistration.", "proposed_research": "Hold both instrument and analyte fixed and separately compare negative TSH observations with interference results for other analytes." }, { "item_id": "N22", "question_type": "Zhang later blood draws", "question": "Was nonsignificance at 26 hours and 50 hours converted into a universal stopping interval?", "needed": "Original results/intervals by blood-draw time, actual dosing/stopping times and duration information by assay/population", "role": "Required", "role_reason": "This is needed to avoid extending nonsignificance at tested time points into the time when interference ends for all people, doses and assays.", "application_exception": "Time points after exposure stops are not recommendations for individuals to stop taking the supplement. Nonsignificance is not equivalence either.", "criterion": "Preserve reports of nonsignificance versus baseline at 26/50 hours for both doses only within the original conditions.", "basis": "C08: M04 §4.6.3, M15 §15.3.1–15.3.3; separation of statuses is internally designed / E08: M03 §3.2.1–3.2.4; dose, duration and effect-modification details are internally designed / H02: design-specific harm questions in M19 §19.2; temporal-relationship details are internally designed. Reason for application to the measurement family: This is needed to avoid extending nonsignificance at tested time points into the time when interference ends for all people, doses and assays. This is not formal implementation of diagnostic/QUADAS/STARD, RoB/GRADE or causality assessments, or clinical certification.", "condition_origin": "A condition developed specifically for this case after actually reading the current measurement materials. This is an individual adaptation of the meaning of a definition, not an automatic copy, blinded assessment or clinical preregistration.", "proposed_research": "Distinguish observations at blood-draw times from criteria for absence of interference, and compare actual persistence/resolution with the original intervals and criteria for those conditions." }, { "item_id": "N23", "question_type": "Ylli abstract-level results", "question": "Was the direction corroborated by Ylli distinguished from unverified quantitative tables?", "needed": "Ylli's original full-text quantitative tables, TSH analysis n/differences/CIs by time point and the abstract's role", "role": "Required", "role_reason": "This is needed to avoid filling in the direction in the abstract/figure captions with percentages/bias magnitudes from full-text tables.", "application_exception": "Do not import percentages from search summaries. The existence of a PMCID does not mean the full text was read.", "criterion": "Record 10 mg/day, 8 days, day 1/day 8, predose/2/5 hours and the Roche direction within the scope of the abstract.", "basis": "C03: data collection/selection principles in M04 §4.5–4.6; separation of access from reading and the hyperlink contract are internally designed / C06: M03 §3.2.4, M15 §15.3.1–15.3.3; outcome adaptations for each question are internally designed / E05: M15 §15.3.1–15.3.3; internal application / D08: Chamgap's internally designed diagnostic-applicability condition; general reference to M04 principles for distinguishing reports/studies. Reason for application to the measurement family: This is needed to avoid filling in the direction in the abstract/figure captions with percentages/bias magnitudes from full-text tables. This is not formal implementation of diagnostic/QUADAS/STARD, RoB/GRADE or causality assessments, or clinical certification.", "condition_origin": "A condition developed specifically for this case after actually reading the current measurement materials. This is an individual adaptation of the meaning of a definition, not an automatic copy, blinded assessment or clinical preregistration.", "proposed_research": "Match the abstract/figure captions to the original tables to distinguish the level of directional verification from numerical verification." }, { "item_id": "N24", "question_type": "Roche document version", "question": "What are the exact version, product and platforms of the Roche method document?", "needed": "Roche method document version, document/product identifiers, supported platforms and installation/revision data", "role": "Required", "role_reason": "This is needed to avoid using a specific version of the method document as evidence of identical performance for all historical Roche reagents.", "application_exception": "The currently retained document version and the versions actually installed in all laboratories are different facts.", "criterion": "Preserve 2024-10 V2.0, 08429324501V2.0, 08429324160 and the e411/e601/e602 scope exactly as recorded.", "basis": "C05: M03 §3.2.2–3.2.3; reverse-direction labeling and adaptations for testing are internally designed / D03: Chamgap's internally designed diagnostic condition; formal diagnostic-method evidence not reviewed / D08: Chamgap's internally designed diagnostic-applicability condition; general reference to M04 principles for distinguishing reports/studies. Reason for application to the measurement family: This is needed to avoid using a specific version of the method document as evidence of identical performance for all historical Roche reagents. This is not formal implementation of diagnostic/QUADAS/STARD, RoB/GRADE or causality assessments, or clinical certification.", "condition_origin": "A condition developed specifically for this case after actually reading the current measurement materials. This is an individual adaptation of the meaning of a definition, not an automatic copy, blinded assessment or clinical preregistration.", "proposed_research": "Link document identifiers to applicable platforms, and separately compare whether the versions at the time of testing/currently installed match." }, { "item_id": "N25", "question_type": "Analytical performance acceptance criteria", "question": "What do the document's biotin test range and allowable deviations mean?", "needed": "The method document's test concentrations, allowable deviations, validation conditions and revision/installation information", "role": "Required", "role_reason": "This is needed to avoid turning an analytical validation concentration into an oral safe dose or a guarantee of bias of 0.", "application_exception": "Do not make new conversions between document concentrations and intake amounts. Allowable deviations differ from the absolute absence of interference.", "criterion": "Record ≤1200 ng/mL, an allowable deviation at TSH ≤0.2 µIU/mL of ≤0.02 µIU/mL, and ≤10% at higher TSH within the document's scope.", "basis": "C06: M03 §3.2.4, M15 §15.3.1–15.3.3; outcome adaptations for each question are internally designed / D03: Chamgap's internally designed diagnostic condition; formal diagnostic-method evidence not reviewed / E05: M15 §15.3.1–15.3.3; internal application / H09: Chamgap's internally designed interpretation boundary. References M19 principles; not implementation of a formal causality tool. Reason for application to the measurement family: This is needed to avoid turning an analytical validation concentration into an oral safe dose or a guarantee of bias of 0. This is not formal implementation of diagnostic/QUADAS/STARD, RoB/GRADE or causality assessments, or clinical certification.", "condition_origin": "A condition developed specifically for this case after actually reading the current measurement materials. This is an individual adaptation of the meaning of a definition, not an automatic copy, blinded assessment or clinical preregistration.", "proposed_research": "Compare the document's concentrations, TSH ranges and allowable deviations, and keep human oral-exposure/clinical-safety questions separate." }, { "item_id": "N26", "question_type": "Published correction and units", "question": "Was Li's published unit correction applied to the original units?", "needed": "Identity and original wording of the published correction, units before/after correction and locations where it applies", "role": "Required", "role_reason": "This is needed to avoid repeating the serum-biotin unit error in citations or also changing TSH units.", "application_exception": "Preserve the correction's original bibliographic information, including PMID/DOI. This is not a new external correction check or numerical conversion in this review.", "criterion": "Under the 2017-11-21 correction, distinguish biotin in pg/mL from TSH in mIU/L, which was unchanged.", "basis": "C08: M04 §4.6.3, M15 §15.3.1–15.3.3; separation of statuses is internally designed / C09: M04 §4.5, §4.6.3; limitations on the current data transformation follow the user's scope and internal design / C06: M03 §3.2.4, M15 §15.3.1–15.3.3; outcome adaptations for each question are internally designed. Reason for application to the measurement family: This is needed to avoid repeating the serum-biotin unit error in citations or also changing TSH units. This is not formal implementation of diagnostic/QUADAS/STARD, RoB/GRADE or causality assessments, or clinical certification.", "condition_origin": "A condition developed specifically for this case after actually reading the current measurement materials. This is an individual adaptation of the meaning of a definition, not an automatic copy, blinded assessment or clinical preregistration.", "proposed_research": "Compare the correction with its linked numbers/units, and do not change values/units outside its applicability." }, { "item_id": "N27", "question_type": "Assigned value above the upper limit", "question": "Is day 7 biotin of 3601 an actual precisely measured concentration?", "needed": "Serum-biotin measurement range, handling of values above the upper limit and the actual analytical assignment rule", "role": "Required", "role_reason": "This is needed to avoid using an assigned analysis value above the upper detection limit as an exact serum concentration or dose-concentration relationship.", "application_exception": "Do not convert 3601 and 3600 to other units or calculate new concentration/bias functions.", "criterion": "Preserve the original statement that all day 7 measurements exceeded 3600 and were assigned 3601.", "basis": "C06: M03 §3.2.4, M15 §15.3.1–15.3.3; outcome adaptations for each question are internally designed / E05: M15 §15.3.1–15.3.3; internal application / C07: M08 Table 8.2.a, M15 §15.3, M19 §19.1.2–19.2.4; design-specific adaptations are internally designed. Reason for application to the measurement family: This is needed to avoid using an assigned analysis value above the upper detection limit as an exact serum concentration or dose-concentration relationship. This is not formal implementation of diagnostic/QUADAS/STARD, RoB/GRADE or causality assessments, or clinical certification.", "condition_origin": "A condition developed specifically for this case after actually reading the current measurement materials. This is an individual adaptation of the meaning of a definition, not an automatic copy, blinded assessment or clinical preregistration.", "proposed_research": "Compare the original detection range and assignment handling to distinguish actual observations, values above the upper limit and model inputs." }, { "item_id": "N28", "question_type": "Nonapplicability of other analytes", "question": "Are results for other thyroid analytes/nonhormone analytes applied to this TSH question?", "needed": "Analyte-specific result tables within the paper/instrument and the original selected-endpoint boundary", "role": "Boundaries for extensions", "role_reason": "This is needed to avoid combining interference in other analytes from the same paper or instrument into TSH bias.", "application_exception": "Do not delete other results or judge them invalid. This exception means they are outside the scope of this standalone table.", "criterion": "Limit the currently selected outcome to TSH and leave extensions to other analytes/treatment/patient outcomes as separate questions.", "basis": "C01: question-clarification principles in M03 §3.1, §3.2.1–3.2.4; detailed separation rules are internally designed / C06: M03 §3.2.4, M15 §15.3.1–15.3.3; outcome adaptations for each question are internally designed / E09: M03 §3.2.4; internally designed boundary for extensions / D09: Chamgap's internally designed boundary for diagnostic extensions; formal diagnostic-method evidence not reviewed. Reason for application to the measurement family: This is needed to avoid combining interference in other analytes from the same paper or instrument into TSH bias. This is not formal implementation of diagnostic/QUADAS/STARD, RoB/GRADE or causality assessments, or clinical certification.", "condition_origin": "A condition developed specifically for this case after actually reading the current measurement materials. This is an individual adaptation of the meaning of a definition, not an automatic copy, blinded assessment or clinical preregistration.", "proposed_research": "Separate results by analyte-platform-exposure-time point to prevent transferring other endpoints that share the same instrument name." }, { "item_id": "N29", "question_type": "Specimen flow and missingness", "question": "Can measurements/analyses and missingness be linked by platform and time point?", "needed": "Participant→blood draw→specimen→platform measurement→analysis flow and handling of indeterminate/excluded/missing results", "role": "Required", "role_reason": "This is needed to avoid substituting enrollment/participant counts or time-point specimen counts as the actual denominator for every analysis.", "application_exception": "Do not present the absence of a detailed flow as 0 missing results or no exclusions.", "criterion": "Separate currently known participants/specimens from the unverified platform-specific analysis flow.", "basis": "C07: M08 Table 8.2.a, M15 §15.3, M19 §19.1.2–19.2.4; design-specific adaptations are internally designed / D06: Chamgap's internally designed diagnostic condition; formal diagnostic-method evidence not reviewed / H06: M19 §19.1.2–19.2.4, M04 §4.6.3; internal application. Reason for application to the measurement family: This is needed to avoid substituting enrollment/participant counts or time-point specimen counts as the actual denominator for every analysis. This is not formal implementation of diagnostic/QUADAS/STARD, RoB/GRADE or causality assessments, or clinical certification.", "condition_origin": "A condition developed specifically for this case after actually reading the current measurement materials. This is an individual adaptation of the meaning of a definition, not an automatic copy, blinded assessment or clinical preregistration.", "proposed_research": "Compare the actual measurement/analysis flow by platform and time point, and do not arbitrarily fill missing results with normal/0." }, { "item_id": "N30", "question_type": "Measurement procedures and QC", "question": "To what level were measurement procedures, calibration/QC and specimen handling verified?", "needed": "Assay-specific calibration/QC, specimen collection/storage, measurement order, reading/blinding and original methodological procedures", "role": "Required", "role_reason": "This is needed to avoid claiming that all analytical procedures and alternative explanations were verified solely from platform names and full-text reading labels.", "application_exception": "This is limited to the absence of detailed procedural values in the KO/structure currently read. It does not mean that the entire original full text failed to report procedures.", "criterion": "Distinguish the original verification locations from the information currently embedded, leaving gaps in comparison of calibration/QC, storage and measurement order/reading.", "basis": "D03: Chamgap's internally designed diagnostic condition; formal diagnostic-method evidence not reviewed / D05: Chamgap's internally designed diagnostic condition; formal diagnostic-method evidence not reviewed / E03: M08 Table 8.2.a, M03 §3.2.4; internal application. Reason for application to the measurement family: This is needed to avoid claiming that all analytical procedures and alternative explanations were verified solely from platform names and full-text reading labels. This is not formal implementation of diagnostic/QUADAS/STARD, RoB/GRADE or causality assessments, or clinical certification.", "condition_origin": "A condition developed specifically for this case after actually reading the current measurement materials. This is an individual adaptation of the meaning of a definition, not an automatic copy, blinded assessment or clinical preregistration.", "proposed_research": "Compare handling/calibration/measurement conditions for the same specimens to verify procedures that could explain differences between time points/platforms." }, { "item_id": "N31", "question_type": "Planning and analysis selection", "question": "Were registration, protocol and SAP compared with actual platforms/time points/contrasts?", "needed": "NCT03034707 and ChiCTR1800020472 histories, protocol/SAP, plans for platforms/endpoints/time points and numerical supplements", "role": "Required", "role_reason": "This is needed to avoid arbitrarily establishing that favorable reported platforms/time points match the original advance plan.", "application_exception": "Do not convert unverified registration/planning into confirmed nonregistration or selective reporting.", "criterion": "Link registration identifiers to original analysis locations and record that plans/multiplicity and the full numerical supplements have not been compared.", "basis": "E04: M08 §8.2.2, M15 §15.3.1; internal application / E06: M08 Table 8.2.a, M04 §4.6.3; internal application / C09: M04 §4.5, §4.6.3; limitations on the current data transformation follow the user's scope and internal design / D05: Chamgap's internally designed diagnostic condition; formal diagnostic-method evidence not reviewed. Reason for application to the measurement family: This is needed to avoid arbitrarily establishing that favorable reported platforms/time points match the original advance plan. This is not formal implementation of diagnostic/QUADAS/STARD, RoB/GRADE or causality assessments, or clinical certification.", "condition_origin": "A condition developed specifically for this case after actually reading the current measurement materials. This is an individual adaptation of the meaning of a definition, not an automatic copy, blinded assessment or clinical preregistration.", "proposed_research": "Compare registration/plan versions and dates with the contrasts/time points actually reported, distinguishing reasons for changes and handling of multiplicity." }, { "item_id": "N32", "question_type": "Reports and study families", "question": "Were reports, platforms, corrections and method documents counted as independent human replications?", "needed": "Report-family-assay/outcome relationships and links to registrations, corrections, method documents and repeat citations", "role": "Required", "role_reason": "This is needed to avoid adding together the main article/supplement/correction from the same study, multiple platforms using the same specimens, and manufacturer documents as independent human replications.", "application_exception": "The direct data from F01/F02 and the abstract-level corroboration from F03 differ in evidence level. A01 is not a human study.", "criterion": "Link the identities and roles of F01's S01/S02/S03, F02's S04, F03's S05 and A01's S08.", "basis": "C02: Distinction between studies and reports in M04 §4.6.1–4.6.2; linking cohorts/outcomes is an internal application / E07: M04 §4.6.1–4.6.2, M15 §15.3.1; internal application / H07: M04 §4.6.1–4.6.2; adaptation for harm data is internally designed / D08: Chamgap's own diagnostic-application condition; general reference to M04's principle of distinguishing reports from studies. Reason for application to the measurement family: This is needed to avoid adding together the main article/supplement/correction from the same study, multiple platforms using the same specimens, and manufacturer documents as independent human replications. This is not formal implementation of diagnostic/QUADAS/STARD, RoB/GRADE or causality methods, or clinical certification.", "condition_origin": "A condition developed specifically for this case after actually reading the current measurement materials. This is an individual adaptation of the meaning of a definition, not an automatic copy, blinded assessment or clinical preregistration.", "proposed_research": "Map unique participant families to report, platform and document types, and assess independence and evidence level separately." }, { "item_id": "N33", "question_type": "Funding, products and independence", "question": "To which report do funding, product provision and author relationships belong?", "needed": "Study-specific funding, product roles, author relationships, declarations in manufacturer performance documents, and their original locations", "role": "Required", "role_reason": "This is needed to avoid treating manufacturer documents or unverified funding as independent performance validation.", "application_exception": "Support or competing interests do not automatically invalidate a result, and a declaration of none does not establish independent verification.", "criterion": "Retain Li's support/relationships, Zhang's declaration of none, Ylli's unverified details and the Roche manufacturer document separately.", "basis": "C10: Chamgap's own independence and attribution condition. The official methods sections used in this demonstration do not warrant all of these detailed items / C02: Distinction between studies and reports in M04 §4.6.1–4.6.2; linking cohorts/outcomes is an internal application. Reason for application to the measurement family: This is needed to avoid treating manufacturer documents or unverified funding as independent performance validation. This is not formal implementation of diagnostic/QUADAS/STARD, RoB/GRADE or causality methods, or clinical certification.", "condition_origin": "A condition developed specifically for this case after actually reading the current measurement materials. This is an individual adaptation of the meaning of a definition, not an automatic copy, blinded assessment or clinical preregistration.", "proposed_research": "Compare the funding/supply/declarations for the relevant report without transferring them to the independence of another study or the validity of its results." }, { "item_id": "N34", "question_type": "Current and historical reading", "question": "Has current reading of local summaries been distinguished from historical external access and access dates?", "needed": "Physical material types, URLs, historical access_level/location, report-specific access-date records and actions in this review", "role": "Required", "role_reason": "This is needed to avoid elevating publisher_full_text or other historical access_level values, or links, to original-source reading in this review.", "application_exception": "The original verified_date is a global review date. If a report-specific access date is absent, it remains null; historical access failures are not displayed as current failures.", "criterion": "Separate current reading of the retained KO/structure and bibliography from unattempted access, non-acquisition and non-reading for each external material type, and from historical access levels.", "basis": "C03: Data collection/selection principles in M04 §4.5–4.6; separation of access from reading and the hyperlink contract are internally designed / C09: M04 §4.5, §4.6.3; limits on the current data transition follow the user-defined scope and internal design. Reason for application to the measurement family: This is needed to avoid elevating publisher_full_text or other historical access_level values, or links, to original-source reading in this review. This is not formal implementation of diagnostic/QUADAS/STARD, RoB/GRADE or causality methods, or clinical certification.", "condition_origin": "A condition developed specifically for this case after actually reading the current measurement materials. This is an individual adaptation of the meaning of a definition, not an automatic copy, blinded assessment or clinical preregistration.", "proposed_research": "Compare each link's actual material type with its historical access level, and record dates/current access events separately." }, { "item_id": "N35", "question_type": "Candidates verified only at the metadata level", "question": "Were discovery leads for S10/S11/S12 elevated to direct performance figures?", "needed": "Original full texts/concentration-response tables and identity/access records for the S10 guideline, S11 LOCI and S12 clinical-measurement candidates", "role": "Required", "role_reason": "This is needed to avoid inventing original quantitative tables from the titles of guideline, LOCI and routine immunoassay papers whose full texts were not accessed.", "application_exception": "Separate unattempted access in the current review from historical full-text access failures. A link/PMCID is not evidence that the full text was read.", "criterion": "Retain the actual identities of the three candidates, the scope of historical discovery/failure, and the unverified original tables.", "basis": "C03: Data collection/selection principles in M04 §4.5–4.6; separation of access from reading and the hyperlink contract are internally designed / C09: M04 §4.5, §4.6.3; limits on the current data transition follow the user-defined scope and internal design / C08: M04 §4.6.3, M15 §15.3.1–15.3.3; status separation is internally designed. Reason for application to the measurement family: This is needed to avoid inventing original quantitative tables from the titles of guideline, LOCI and routine immunoassay papers whose full texts were not accessed. This is not formal implementation of diagnostic/QUADAS/STARD, RoB/GRADE or causality methods, or clinical certification.", "condition_origin": "A condition developed specifically for this case after actually reading the current measurement materials. This is an individual adaptation of the meaning of a definition, not an automatic copy, blinded assessment or clinical preregistration.", "proposed_research": "Link discovered bibliographic records to full-text results without extracting or estimating concentrations/bias figures from tables that were not accessed." }, { "item_id": "N36", "question_type": "Inheritance of general safety sources", "question": "Were the historical NIH/FDA extracts counted as independent TSH studies?", "needed": "Historical NIH/FDA extracts, original access histories, and the documents' actual scope of analytes/secondary citations", "role": "Required", "role_reason": "This is needed to avoid double-counting official general safety documents and secondary citations as independent human measurement results.", "application_exception": "Do not transfer the analyte scope of the FDA troponin document to direct TSH figures.", "criterion": "Retain S06/S07's inherited_official_extract status, general safety role and boundary of no new search.", "basis": "C02: Distinction between studies and reports in M04 §4.6.1–4.6.2; linking cohorts/outcomes is an internal application / C03: Data collection/selection principles in M04 §4.5–4.6; separation of access from reading and the hyperlink contract are internally designed / H09: Chamgap's own interpretation boundary. Reference to M19 principles, not implementation of a formal causality tool. Reason for application to the measurement family: This is needed to avoid double-counting official general safety documents and secondary citations as independent human measurement results. This is not formal implementation of diagnostic/QUADAS/STARD, RoB/GRADE or causality methods, or clinical certification.", "condition_origin": "A condition developed specifically for this case after actually reading the current measurement materials. This is an individual adaptation of the meaning of a definition, not an automatic copy, blinded assessment or clinical preregistration.", "proposed_research": "Link safety background/secondary citations in official documents to unique studies and distinguish them from independent results." }, { "item_id": "N37", "question_type": "Guidance and boundaries for stopping intervals", "question": "Is AACC guidance distinguished from individual stopping intervals and testing/treatment schedules?", "needed": "The actual context of guidance recommendations by population, renal function/exposure and assay, and individual testing conditions", "role": "Required", "role_reason": "This is needed to avoid converting general guidance or study time points into a safe stopping interval for a particular person.", "application_exception": "The original numerical recommendations in the guidance are not embedded in the current JSON, so no new values are presented.", "criterion": "Link AACC's historical scope to the prohibition on a universal stopping interval or individual treatment changes.", "basis": "D09: Chamgap's own boundary for diagnostic extensions; official diagnostic-method evidence not reviewed / E08: M03 §3.2.1–3.2.4; dose, duration and effect-modification details are internally designed / H02: Design-specific harm questions in M19 §19.2; timing-relationship details are internally designed / H08: M19 §19.1.2–19.2.4; internal application. Reason for application to the measurement family: This is needed to avoid converting general guidance or study time points into a safe stopping interval for a particular person. This is not formal implementation of diagnostic/QUADAS/STARD, RoB/GRADE or causality methods, or clinical certification.", "condition_origin": "A condition developed specifically for this case after actually reading the current measurement materials. This is an individual adaptation of the meaning of a definition, not an automatic copy, blinded assessment or clinical preregistration.", "proposed_research": "Compare assay/population-specific guidance conditions with actual installations and exposure, without generalizing to a universal interval or individual action." }, { "item_id": "N38", "question_type": "Safety Warning and patient harm", "question": "What possibility and what actual observations does the Warning represent?", "needed": "Reference-limit crossing of measured values, actual clinical judgments/actions after testing, and harm definitions/collection/denominators/follow-up", "role": "Required", "role_reason": "This is needed to avoid converting the possibility of interpretation errors from falsely low measurements into an actual patient harm rate or established causation of an event.", "application_exception": "Do not reuse the presence of measurement bias as a judgment of individual safety/efficacy.", "criterion": "Retain the original safety Warning, measured values and reference-limit crossing, while distinguishing the absence of data on actual misdiagnosis/harm.", "basis": "H01: M19 §19.1.2–19.2.4; detailed distinctions are internally designed / H04: M19 §19.1.2–19.2.4; internal application / H09: Chamgap's own interpretation boundary. Reference to M19 principles, not implementation of a formal causality tool / D09: Chamgap's own boundary for diagnostic extensions; official diagnostic-method evidence not reviewed. Reason for application to the measurement family: This is needed to avoid converting the possibility of interpretation errors from falsely low measurements into an actual patient harm rate or established causation of an event. This is not formal implementation of diagnostic/QUADAS/STARD, RoB/GRADE or causality methods, or clinical certification.", "condition_origin": "A condition developed specifically for this case after actually reading the current measurement materials. This is an individual adaptation of the meaning of a definition, not an automatic copy, blinded assessment or clinical preregistration.", "proposed_research": "Compare analytical bias separately with the timing, alternative explanations and denominators for post-test decisions and patient events to verify the scope of direct harm evidence." }, { "item_id": "N39", "question_type": "Vulnerable populations, high doses and duration", "question": "Have bias magnitude and duration outside the healthy-adult conditions been verified?", "needed": "Actual exposure, reagents and blood-draw-time-specific bias/duration information for populations defined by renal function, pregnancy, childhood or high-dose treatment", "role": "Required for extension claims; supplementary to the narrow question", "role_reason": "This is needed to avoid extending the results of short-term exposure in healthy adults to all populations with renal impairment, pregnancy, childhood or high-dose treatment.", "application_exception": "Studies in every vulnerable population are not mandatory to establish this narrow measurement question, but direct information is required for the corresponding extension claims.", "criterion": "Record the direct study conditions separately from unverified information on special populations and long-term/rare situations.", "basis": "C04: M03 §3.2.1; detailed population conditions are internally designed / H08: M19 §19.1.2–19.2.4; internal application / E08: M03 §3.2.1–3.2.4; dose, duration and effect-modification details are internally designed. Reason for application to the measurement family: This is needed to avoid extending the results of short-term exposure in healthy adults to all populations with renal impairment, pregnancy, childhood or high-dose treatment. This is not formal implementation of diagnostic/QUADAS/STARD, RoB/GRADE or causality methods, or clinical certification.", "condition_origin": "A condition developed specifically for this case after actually reading the current measurement materials. This is an individual adaptation of the meaning of a definition, not an automatic copy, blinded assessment or clinical preregistration.", "proposed_research": "Compare exposure/elimination, underlying conditions and assay/time-point data for special populations, and distinguish them from healthy-adult results." }, { "item_id": "N40", "question_type": "Reference date and update scope", "question": "Which retained reference date underlies the statements, and what changes trigger a new review?", "needed": "Reference date, current review date, search/access records, reagent revisions, original corrections/retractions, and new numerical/classification data", "role": "Required", "role_reason": "This is needed to avoid overstating the retained current value as verification of all the latest literature or current installations, or as an exhaustive search.", "application_exception": "Verification of new reagent documents, corrections, retractions and numerical/classification errors is not a request for automatic execution now.", "criterion": "Link the evidence-review date of 2026-09-15 and this review date to unverified information, corrections/revisions and the update scope.", "basis": "C09: M04 §4.5, §4.6.3; limits on the current data transition follow the user-defined scope and internal design / C08: M04 §4.6.3, M15 §15.3.1–15.3.3; status separation is internally designed / C03: Data collection/selection principles in M04 §4.5–4.6; separation of access from reading and the hyperlink contract are internally designed. Reason for application to the measurement family: This is needed to avoid overstating the retained current value as verification of all the latest literature or current installations, or as an exhaustive search. This is not formal implementation of diagnostic/QUADAS/STARD, RoB/GRADE or causality methods, or clinical certification.", "condition_origin": "A condition developed specifically for this case after actually reading the current measurement materials. This is an individual adaptation of the meaning of a definition, not an automatic copy, blinded assessment or clinical preregistration.", "proposed_research": "Retain before/after original values, versions, dates and access levels under the same ID, and compare the basis for changes and revisions of conditions as separate events." } ], "language": "en", "translation_date": "2026-11-03", "measurement_only": true, "display_contract": { "forbid_efficacy_badge": true, "forbid_aggregate_rating": true, "forbid_universal_stopping_interval": true, "unknown_rendering": "Show the reason for unknown status; never convert it to 0, normal, absent, or false." } }