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HelpTest ID IGAS IgA Subclasses, Serum
Useful For
Investigation of immune deficiency due to IgA2 deficiency
Evaluating patients with anaphylactic transfusion reactions
Method Name
Turbidimetry
Reporting Name
IgA Subclasses, SSpecimen Type
SerumSpecimen Required
Supplies: Sarstedt Aliquot Tube 5 mL (T914)
Collection Container/Tube:
Preferred: Serum gel
Acceptable: Â Red top
Submission Container/Tube: Plastic vial
Specimen Volume: 1 mL
Collection Instructions: Centrifuge and aliquot serum into a plastic vial.
Specimen Minimum Volume
0.5 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Serum | Refrigerated (preferred) | 7 days | |
| Ambient | 7 days | ||
| Frozen | 7 days |
Reference Values
IgA
1-3.9 years: 5-194 mg/dL
4-6.9 years: 16-210 mg/dL
7-9.9 years: 27-227 mg/dL
10-11.9 years: 35-241 mg/dL
12-13.9 years: 43-252 mg/dL
14-15.9 years: 50-263 mg/dL
16-17.9 years: 57-274 mg/dL
>18 years: 85-499 mg/dL
IgA1
1-3.9 years: 6-163 mg/dL
4-6.9 years: 16-186 mg/dL
7-9.9 years: 26-209 mg/dL
10-11.9 years: 34-228 mg/dL
12-13.9 years: 40-243 mg/dL
14-15.9 years: 46-259 mg/dL
16-17.9 years: 53-274 mg/dL
>18 years: 76-328 mg/dL
IgA2
1-3.9 years: <0.5-12.4 mg/dL
4-6.9 years: <0.5-25.7 mg/dL
7-9.9 years: 1.5-38.9 mg/dL
10-11.9 years: 2.9-49.9 mg/dL
12-13.9 years: 4.0-58.7 mg/dL
14-15.9 years: 5.2-67.5 mg/dL
16-17.9 years: 6.3-76.3 mg/dL
>18 years: 6.9-114.3 mg/dL
Day(s) Performed
Tuesday, Friday
Performing Laboratory
Mayo Clinic Laboratories in Rochester
CPT Code Information
82784
82787 x 2
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| IGAS | IgA Subclasses, S | 87552-6 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| IGA_ | IgA | 2458-8 |
| IGA1_ | IgA1 | 6886-6 |
| IGA2_ | IgA2 | 6939-3 |