Hemoglobin A1c (HbA1c) (404)

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CPT Code:


Test Type: 1.0 mL whole Blood Kit Based
Stability Time:

Refrigerated:  7 days

Reference Range:
  • Optimal: <5.7%
  • Borderline: 5.7–6.4%
  • Increased Risk: >6.4%
  • Alert: >11.9 %


This test measures the concentration of glucose attached to the hemoglobin in red blood cells. It assesses the average amount of glucose in the blood over the last two to three months.


Turbidimetric inhibition immunoassay

Collection Details:

Collection Instructions:

1.0 mL whole blood collected in EDTA (Lavender Top)

Refrigerated (ship on frozen cold packs)