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HelpTest Code IGAS IgA Subclasses, Serum
Specimen Required
Supplies: Sarstedt Aliquot Tube 5 mL (T914)
Collection Container/Tube:
Preferred: Serum gel
Acceptable: Red top
Submission Container/Tube: Plastic vial
Specimen Volume: 1 mL
Collection Instructions: Centrifuge and aliquot serum into a plastic vial.
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 Minimum Volume
0.5 mL
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum | Refrigerated (preferred) | 7 days |
| Ambient | 7 days | |
| Frozen | 7 days |
Reject Due To
| Gross hemolysis | OK |
| Gross lipemia | Reject |
| Gross icterus | OK |
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
Report Available
Same day/1 to 3 daysPerforming Laboratory
Mayo Clinic Laboratories in Rochester
Test Classification
This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.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 |