Validation of the Use of Trinity Biotech ultra2 as a Comparative Method for Hemoglobin A1c Measurements in the Presence of HbE and HbD-Punjab Traits
Bibliographic record
Abstract
To the Editor: The presence of hemoglobin variants can cause interferences with some Hemoglobin A1c (Hb A1c)1 methods. Boronate affinity chromatography is often used as the comparative method for hemoglobin interference studies, as it is generally assumed to be unaffected by most hemoglobin variants since total glycohemoglobin is measured regardless of hemoglobin species. We previously validated the use of the Trinity Biotech ultra2 boronate affinity HPLC as a comparative method for assessing interference from HbS and HbC traits (1). Here, we validate the use of the ultra2 as a comparative method for HbE trait (HbAE) and HbD-Punjab trait (HbAD) interference studies by comparing ultra2 Hb A1c results from samples with these variants with those of the IFCC HPLC–capillary electrophoresis (CE) reference method for Hb A1c (IFCC RM). The IFCC RM measures the β chain N-terminal glycated and nonglycated hexapeptides after a proteolytic digestion (2). Since the …
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.004 | 0.022 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.001 | 0.002 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.002 | 0.000 |
| Research integrity | 0.008 | 0.009 |
| Insufficient payload (model declined to judge) | 0.003 | 0.004 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".