Alpha-1-Antitrypsin
Also known as: A1A
Use
Determines alpha-1-antitrypsin (AAT) enzyme plasma concentration for the initial evaluation of AAT deficiency.
Special Instructions
Specimen must be handled promptly. After collection, serum or plasma should be separated from cells as soon as possible or within 2 hours to ensure accurate results.
Limitations
Hemolyzed specimens can significantly affect the accuracy of the test results and are therefore unacceptable. Repeated freeze/thaw cycles should be avoided to maintain specimen integrity and ensure reliable results.
New York Approved
Methodology
Immunoassay (Immunoturbidimetry)
Biomarkers
LOINC Codes
- 1825-9
Result Turnaround Time
1 day
Related Documents
For more information, please review the documents below
Specimen
Plasma
Volume
0.5 mL
Minimum Volume
0.2 mL
Container
ARUP Standard Transport Tube
Collection Instructions
Plasma separation tube or serum separator tube. Also acceptable: Lavender (EDTA), pink (K2EDTA), Green (Lithium Heparin). Allow specimen to clot completely at room temperature. Separate serum or plasma from cells ASAP or within 2 hours of collection.
Storage Instructions
Refrigerated
Causes for Rejection
Hemolyzed specimens.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 1 week |
| Refrigerated | 3 months |
| Frozen | 3 months (avoid repeated freeze/thaw cycles) |