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biochemistryHas Critical Values
Hemoglobin A1c
HbA1c· also: A1C, Glycated Hb
Clinical Overview
HbA1c reflects average blood glucose over the past 2–3 months. It is the gold standard for diabetes monitoring and diagnosis. Each 1% increase above 6.5% significantly increases complication risk.
Reference RangesWHO/IFCC standards
| Reference Range | Unit | Notes |
|---|---|---|
| 4 – 5.6 | % | Normal |
| 5.7 – 6.4 | % | Pre-diabetes |
Also reported in: mmol/mol.
Critical (Panic) Values
Critical High: > 14 %. Values outside these limits require immediate clinical attention.
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Related Topics
diabetesglucoseHbA1cglycated hemoglobin