Hemoglobin A1c

Hemoglobin A1c (HbA1c) is a glycated hemoglobin, representing the average blood glucose level over the preceding 6-8 weeks and is mainly used for diabetes monitoring.

Reference Ranges

% DCCT/NGSPmmol/mol IFCCInternational Federation of Clinical Chemistry and Laboratory Medicine
Non-diabetics4 – 620 – 42
Target for treatment in diabetics< 7< 53
Change of therapy in diabetics> 8> 64
Each laboratory should check if the reference ranges are transferable to its own patient population and determine own reference ranges if necessary. For diagnostic purposes, the results should always be assessed with the patient’s medical history, clinical examinations and other findings.

Increased in

  1. Increased blood glucose concentration over a period of 6 – 8 weeks in individuals with diabetes mellitus

HbA1c

Average blood glucose

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