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HelpTest Code A2M Alpha-2-Macroglobulin, Serum
Reporting Name
Alpha-2-Macroglobulin, SUseful For
Evaluating patients with nephrotic syndrome and pancreatitis
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Specimen Type
SerumSpecimen 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 plastic vial
Specimen Minimum Volume
0.5 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Serum | Refrigerated (preferred) | 21 days | |
| Frozen | 28 days | ||
| Ambient | 72 hours |
Reference Values
≤18 years: 178-495 mg/dL
>18 years: 100-280 mg/dL
Day(s) Performed
Monday through Friday
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
83883
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| A2M | Alpha-2-Macroglobulin, S | 1835-8 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| A2M | Alpha-2-Macroglobulin, S | 1835-8 |
Report Available
1 to 3 daysReject Due To
| Gross hemolysis | OK |
| Gross lipemia | Reject |
| Gross icterus | OK |
Method Name
Nephelometry
Forms
If not ordering electronically, complete, print, and send a Gastroenterology and Hepatology Test Request (T728) with the specimen.