Test Name: Alpha-1-Antitrypsin
Health Link Test Code: XA1A
LIS Test Code: AAT
CPT Code(s): 82103
Alpha-1-antitrypsin test aids in the diagnosis of alpha-1-antitrypsin deficiency associated with familial pulmonary emphysema and liver disease. Decreased serum alpha-1-antitrypsin may also be seen in prematurity, severe liver disease, malnutrition, renal protein loss and gastrointestinal protein loss. Serum alpha-1-antitrypsin may be increased in infection, neoplasia, pregnancy and use of birth control pills.
Days Performed: Daily, 24 hours.
In-Lab Turnaround Time: 4 hours.
Stat In-Lab Turnaround Time: 1 hour.
Collection Container: Green cap with yellow ring (PST)
Also Acceptable: Green top, Red cap with yellow ring (SST), Red top
Collection Volume: 1 mL
Pediatric Collection Volume: 0.4 mL
Sample Analyzed: Plasma or serum
Testing Volume: 0.5 mL
Pediatric Testing Volume: 0.2 mL
Centrifuge within 2 hours of draw. If a complete barrier has not formed, transfer cell-free plasma/serum to clear plastic vial. Refrigerate.
Transport specimen to the laboratory. Transport with coolant pack if coming from clinic location.
0 days and up: 90-200 mg/dL
Interpretation Type: Reference Interval