Hemoglobin A1C
Tube Type
| Test ID |
LAB90 |
| EPIC Order |
HGB A1C; HEMOGLOBIN A1C |
| CPT Code(s) |
83036 |
| Group/Individual Test |
Group |
| Laboratory |
Core Laboratory |
| Tube Station |
30 |
| Specimen |
Routine: |
3 mL blood/lavender EDTA tube |
| Micro: |
500 uL blood/lavender EDTA bullet (minimum volume-allows for no repeats) |
| Stability |
Whole blood: |
Room temperature: 48 hrs
Refrigerator: 7 days
Frozen: 21 months
|
| Availability |
Routine: |
24 hrs/day |
| Turnaround Time |
Routine: 6 hours; STAT: 1 hour |
Reference Range
|
Normal: |
4.8-5.6% |
|
| Screening or Diagnosis of Diabetes Mellitus* |
| HA1c Reference Interval |
Interpretation |
| 4.8-5.6 |
Normal |
| 5.7-6.4 |
Dysglycemia |
| >6.4 |
Diabetes Mellitus |
| *Not recommended for diagnosis of diabetes in children with Cystic Fibrosis or with symptoms suggestive of acute onset type 1 diabetes. |
|
|
|
| HA1c Glycemic Goals |
Age Group |
| <7.5% |
<18 yrs |
| <7.0% |
≥18 yrs |
|
|
|
Goals should be individualized; more or less stringent A1c glycemic goals may be appropriate for individual patients.
(Adopted from: 2024 ADA Standards of Medical Care in Diabetes)
|
|
| Comment |
Includes calculation of Estimated Average Glucose(eAG) using the equation: eAG mg/dL = [28.7 X HbA1C]-46.7. There is no reference range associated with the calculation. The calculation cannot be performed when the HbA1C concentration is outside the analytical measuring range. There is no charge for the calculation.
|
Reviewed by J. Carr on January 13, 2026
