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HelpTest Code IGA Immunoglobulin A
Laboratory Code
LAB3006
Specimen Requirements
Specimen Type: Serum
Container/Tube: Gold Top (SSTII)
Volume: 5.0 mL / 6.0 mL
Minimum Volume: 0.5 mL serum
Collection Instructions: Allow specimen to clot for 30 mins and centrifuge within 2 hrs.
Specimen Stability
| Specimen Type | Serum |
|---|---|
| Ambient | 7 days |
| Refrigerate | 7 days |
| Frozen | 6 months |
Methodology
Immunoturbidimetry
Days and Times Performed
24 hrs, TAT 1 day
Specimen Condition
| Haemolysis | OK |
|---|---|
| Icterus | OK |
| Gross Lipaemia | Alert/Reject |
| Others | Not applicable |
Reference Interval
| Age | Male | Female |
|---|---|---|
| 0 – < 1 yr | 0.0 – 0.3 g/L | |
| 1 – 2 yrs | 0.0 – 0.9 g/L | |
| 3 – 5 yrs | 0.3 – 1.5 g/L | |
| 6 – 13 yrs | 0.5 – 2.2 g/L | |
| 14 – 18 yrs | 0.5 – 2.9 g/L | |
| 19 – 59 yrs | 0.6 – 4.8 g/L | 0.6 – 4.2 g/L |
| ≥ 60 yrs | 1.0 – 6.5 g/L | 0.7 – 5.2 g/L |
Testing Laboratory
National University Hospital
Clinical Chemistry, 67724346
Useful For
Evaluation of humoral immunity. Increased level is seen in IgA myeloma, liver chirrhosis and chronic infection.
Decreased level is seen in malabsorption, hereditary telangectasia, hereditary and acquired immunodeficiency states.
Service Code
31612
LOINC Code Information
2458-8
Alias
Gamma-Globulins, Quantitative
IgA single test
Immune Competence
Update
Last updated 11/03/2025