"Clinical Significance
Hemoglobin A1c with eAG with Reflex to GlycoMark® - To assist with control of blood glucose levels, the American Diabetes Association (ADA) has recommended glycated hemoglobin testing (HbA1c) twice a year for patients with stable glycemia, and quarterly for patients with poor glucose control. Interpretative ranges are based on ADA guidelines.

Preferred Specimen(s)
Submit two separate specimens: 
Whole blood from a full EDTA (lavender-top) tube and 1 mL serum

Alternative Specimen(s)
Submit two separate specimens:
Whole blood from a full EDTA (lavender-top) tube and 1 mL plasma collected in an EDTA (lavender-top) tube

Minimum Volume
0.5 mL for each sample type

Transport Container
EDTA (lavender-top) tube and transport tube

Specimen Stability
Room temperature: 7 days
Refrigerated: 7 days
Frozen: 6 months
 
Reject Criteria
Sodium fluoride/oxalate (gray-top) tube • Heparinized plasma

Includes
If Hemoglobin A1c is ≥6.5% and ≤8.0%, then GlycoMark® will be performed at an additional charge (CPT code(s): 84378).

Methodology
Enzymatic

Reference Range(s)
<5.7 % of total hemoglobin

Alternative Name(s)
A1c,HA1c,Hgb A1c