Hemoglobin A2
Test Mnemonic
HBA2
CPT Codes
- 83020 - QTY (1)
LOINC ®
4551-8
Performing Laboratory
Cleveland Clinic Laboratories
Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 4 mL | Whole blood | EDTA (Lavender) | Refrigerated |
Minimum Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 1 mL |
Stability
| Environmental Condition | Description |
|---|---|
| Refrigerated | 7 days |
| Ambient | Unacceptable |
| Frozen | Unacceptable |
Days Performed
Mon - Fri
Turnaround Time
1 - 4 days
Methodology
| Name | Description |
|---|---|
| Capillary Electrophoresis (CE) |
Reference Range
| Hemoglobin A2 | |||||
|---|---|---|---|---|---|
| Sex | Age From | Age To | Type | Range | Range Unit |
| Normal | 2.0-3.1 | % |
Special Info
Indicate ethnic or racial origin (when possible), date if transfused within previous month, and age of patient on requisition.
Clinical Info
Quantification of hemoglobin A2 is useful in the evaluation of suspected beta thalassemia.
Clinical Limitation
Anemia due to iron deficiency may falsely lower Hb A2 levels.