Alpha-1-Antitrypsin
Ordering Recommendation
Determines alpha-1-antitrypsin (AAT) enzyme plasma concentration for the initial evaluation of AAT deficiency.
New York DOH Approval Status
Specimen Required
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. Transfer 0.5 mL serum to an ARUP Standard Transport Tube. (Min: 0.2 mL)
Refrigerated.
Hemolyzed specimens.
After separation from cells: Ambient: 1 week; Refrigerated: 3 months; Frozen: 3 months (avoid repeated freeze/thaw cycles)
Methodology
Quantitative Immunoturbidimetry
Performed
Sun-Sat
Reported
Within 24 hours
Reference Interval
Effective November 17, 2014
90-200 mg/dL
Interpretive Data
FDA
Note
Hotline History
CPT Codes
82103
Components
Component Test Code* | Component Chart Name | LOINC |
---|---|---|
0050001 | Alpha-1-Antitrypsin | 1825-9 |
Aliases
- A1-Antitrypsin
- A1A
- AAT
- Alpha 1 Antitrypsin
- Anti-Alpha-1-Trypsin