Home
HelpTest Code LAB73 Immunoglobulin A (IgA)
Useful For
Detecting increased or decreased levels of Immunoglobulin A. IgA values are decreased in immune deficiency states, infancy, non-IgA myelomas, and protein-losing conditions. IgA values are increased in chronic infections, chronic liver disease, cirrhosis, and myeloma.
Methodology
Immunoturbidimetric assay
Performing Laboratory
Bozeman Health Laboratory Services
Specimen Requirements
Specimen Type: Plasma or serum
Container/Tube: Light-green top (lithium heparin gel), red top, or gold top
Specimen Volume: 1 mL
Specimen Minimum Volume: 0.5 mL
Specimen Transport Temperature
Ambient/Refrigerated
Specimen Stability
| Specimen Type | Temperature | Time |
|---|---|---|
| Plasma or Serum | Ambient | 8 months |
| Refrigerated | 8 months | |
| Frozen | 8 months |
Reference Values
Adults: 70-400 mg/dL
During childhood and adolescence, reference ranges for IgA are dependent on age and can vary over a wide range:
| Age | Reference Values |
|---|---|
| 0-5 months | 7-37 mg/dL |
| 5 months - 9 months | 16-50 mg/dL |
| 9 months - 15 months | 27-66 mg/dL |
| 15 months - 2 years | 36-79 mg/dL |
| 2 years - 4 years | 27-246 mg/dL |
| 4 years - 7 years | 29-256 mg/dL |
| 7 years - 10 years | 34-274 mg/dL |
| 10 years - 13 years | 42-295 mg/dL |
| 13 years - 16 years | 52-319 mg/dL |
| 16 years - 18 years | 60-337 mg/dL |
| 18 years and older | 61-356 mg/dL |
Day(s) Test Set Up
Monday through Sunday
Test Classification and CPT Coding
82784