Alpha-1 Antitrypsin Level
Test Code
A1AT
Description
Alpha-1-Antitrypsin, Quantitative - Alpha-1-Antitrypsin level may be increased in normal pregnancy and in several diseases including chronic pulmonary disease; hereditary angioedema; renal, gastric, liver and pancreatic diseases; diabetes; carcinomas and rheumatoid diseases. Alpha-1-Antitrypsin may be decreased in emphysema, hepatic cirrhosis, respiratory distress syndrome of the newborn, nephrosis, malnutrition and cachexia. If a deficiency is present, aat phenotyping may be considered to confirm heterozygous versus homozygous deficiencies.Collect
Plain red top or SST tube.Preferred volume: 1 mL serum
Pediatric Collection
Minimum Volume: 0.5 mL serumStorage Transport Temp
Room TemperatureStability
Stability after cell separation:8 Hours at Room Temperature (15-25°C)
7 Days Refrigerated (2-8°C)
3 Months Frozen ( ≤ -70°C)
Performed
Monday through FridayMethodology
TurbidimetryTurnaround Time
4 hours routine1 hour STAT
Department
Core Lab
Synonyms
A1ATStudy Offerings
Not offered
Reference Interval
| Age | Male/Female (mg/dl) |
| Newborn - 30 days | 124-348 |
| 31 days - 5 months | 111-297 |
| 6 months - 1 year | 95-251 |
| 2 -19 | 110 -279 |
| 20+ | 72 -192 |
CPT Code
82103New York Approved
FDA Approved or Cleared
FDA
Approved or Cleared