HGB A1c
Test:
133
CPT:
83036
Synonyms
1-Glycated Hemoglobin
2-Hgb A1c
Special Instructions
Expected Turnaround Time
Within 1 day
Specimen Requirements
Specimen
Within 1 day
Volume
4 mL
Minimum Volume
Pediatric EDTA whole blood tubes may be used. Please place original labeled capillary tube in a labeled transport tube for shipment to the laboratory. (Note: This volume does not allow for repeat testing.)
Container
Lavender-top (EDTA) tube, green-top (lithium heparin) tube, or gray-top (sodium fluoride) tube
Collection
The usual precautions in the collection of venipuncture samples should be observed. The sample must be free of clots. Samples with any hematocrit disorders can lead to erroneous results. Send the entire tube to the laboratory.
Storage Instructions
Maintain specimen at room temperature.
Causes for Rejection
Clotted specimen; gross hemolysis
Test Details
Use
Hemoglobin A1c values are used to assess glucose control in diabetes, and in 2010 the American Diabetes Associations affirmed the decision of an international expert committee recommendation to use the A1c test to diagnose diabetes with a threshold ≥6.5%. Point-of-care A1c assays are not sufficiently accurate at this time to use for diagnostic purposes.