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Hemoglobin A1C
MessageChemistry
Test Code
LAB90
Alias/See Also
Hemoglobin A1C, Glycohemoglobin
CPT Codes
83036
Includes
% Hemoglobin A1c
Preferred Specimen
Whole blood (lavender top tube, EDTA)
Minimum Volume
600 uL Whole Blood
Instructions
Lab: Do not centrifuge
Transport Container
EDTA
Transport Temperature
Refrigerated
Specimen Stability
Ambient: up to 3 days
Refrigerated: 3 days
Refrigerated: 3 days
FDA Status
Approved
Setup Schedule
Daily
Report Available
Same day
Limitations
Any cause of shortened red cell survival (hemolytic anemia or other hemolytic diseases, pregnancy,
recent significant blood loss) will reduce exposure of red cells to glucose with a consequent decrease in
%A1c values. Caution should be used when interpreting the %A1c results from patients with chronic
blood loss and consequent variable erythrocyte lifespan. Iron deficiency anemia can lead to an increased
erythocyte mass, thus altering the average age of erythrocytes.
recent significant blood loss) will reduce exposure of red cells to glucose with a consequent decrease in
%A1c values. Caution should be used when interpreting the %A1c results from patients with chronic
blood loss and consequent variable erythrocyte lifespan. Iron deficiency anemia can lead to an increased
erythocyte mass, thus altering the average age of erythrocytes.
Reference Range
Hgb A1C: 4.0 - 5.9 %
Interpretation*:
<6.0% - Non-Diabetic Range
6.0-7.0 – ADA Therapeutic Target
>7.0 – Action suggested.
* NGSP intervals were published by the National Glycohemoglobin Standardization Program (NGSP). The
intervals are based on the American Diabetes Association (ADA) position statement regarding glycated hemoglobin testing. The reference intervals are applicable to methods that are traceable to the Diabetes Control and Complications Trial (DCCT).
Interpretation*:
<6.0% - Non-Diabetic Range
6.0-7.0 – ADA Therapeutic Target
>7.0 – Action suggested.
* NGSP intervals were published by the National Glycohemoglobin Standardization Program (NGSP). The
intervals are based on the American Diabetes Association (ADA) position statement regarding glycated hemoglobin testing. The reference intervals are applicable to methods that are traceable to the Diabetes Control and Complications Trial (DCCT).
Performing Laboratory
Hoag Newport/ Hoag Irvine
