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HelpTest Code LAB558 Alpha-1-Antitrypsin, Random, Feces
Additional Codes
Mayo Test Code: A1AF
Useful For
Diagnosing protein-losing enteropathies, especially when used in conjunction with serum alpha-1-antitrypsin (AAT) levels as a part of AAT clearance studies
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Specimen Type
FecalOrdering Guidance
The preferred test for diagnosing protein-losing enteropathies is A1AFS / Alpha-1-Antitrypsin Clearance, Feces and Serum.
Specimen Required
Supplies:
-Stool container, Small (Random), 4 oz (T288)
-Stool Collection Kit, Random (T635)
Container/Tube: Stool container
Specimen Volume: 5 g
Collection Instructions: Collect a random fecal specimen.
Specimen Minimum Volume
Homogenized Stool: 1 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Fecal | Frozen (preferred) | 14 days | |
| Ambient | 14 days | ||
| Refrigerated | 14 days |
Reference Values
≤54 mg/dL
Day(s) Performed
Monday through Friday
Test Classification
This test has been modified from the manufacturer's instructions. Its performance characteristics were determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the US Food and Drug Administration.CPT Code Information
82103
Report Available
1 to 3 daysReject Due To
| Feces collected in any preservative or fixative | Reject |
Method Name
Nephelometry