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HelpTest Code HGBA1C Hemoglobin A1c, Blood
Additional Codes
LAB90
Collection Method
Venous collection
Container
Purple (EDTA)
Acceptable Specimens
EDTA Whole Blood
Minimum Volume
0.5ml
Specimen Stability
| Ambient | 3 days |
| Refrigerated (4°C to 8°C) | 7 days |
| Frozen(-40°C to 0°C) | 6 months |
Reference or Target Ranges
| Age | Male | Female |
| < 18 years | Reference Range Not Established | Reference Range Not Established |
| ≥18 years |
4 - 6% comment |
4 - 6% comment |
Comment :
According to the American Diabetes Association (ADA), an HbA1c ≥6.5% indicates diabetes. The treatment goal for adults is HbA1c <7.0%. Persistent results >8.0% may warrant reevaluation of therapy.
Testing is NGSP-certified and standardized to the Diabetes Control and Complication Trial (DCCT) reference method.
Reportable Units
% (percentage)
Critical Value
Not defined for this assay
Reasons for Rejection
| Hemolysis Threshold | N/A |
| Icterus Threshold | 60 mg/dL |
| Lipemia Threshold | 600 mg/dL |
| Other | QNS, contaminated, improperly Labeled, improper specimen type |
Performance Information
| Days and Time Performed | 24/7 |
| Expected Turn Around Time |
Stat: 1 hour Routine: 4 hours |
| Stat Availability | Yes |
| Performing Bench | CPH Chemistry |
| Methodology/Method Description | Roche Cobas |
CPT Codes
83036
Last review/edit date
2025