Normal range 4-5.6 % (20-38 mmol/mol SI). Specimen: Whole blood (EDTA).
Also known as: glycated hemoglobin, A1c, glycosylated hemoglobin.
4-5.6 %Reference range
Reference range
Conventional%
45.6
SImmol/mol
2038
Combined adult band. LabVals does not publish separate men's, women's, or pediatric ranges for Hemoglobin A1c (HbA1c); those can be narrower than the band shown.
Hemoglobin A1c (HbA1c) reference range, specimen, and conversion details
What is the normal range for Hemoglobin A1c (HbA1c)?
The standard teaching reference range for Hemoglobin A1c (HbA1c) is 4-5.6 % in conventional units, or 20-38 mmol/mol in SI units. This value is measured in whole blood (edta).
Source: Adult reference values compiled from Pagana & Pagana, Mosby's Diagnostic and Laboratory Test Reference, and Fischbach & Dunning, A Manual of Laboratory and Diagnostic Tests. Reference ranges vary by laboratory, method, age, sex, and population - always use the range printed on the actual result.
Reflects average glucose over ~2-3 months; ≥ 6.5% supports diabetes.
Most diabetes treatment goals target < 7%.
Unreliable with hemoglobinopathies or altered red-cell survival.
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