Alpha 1 antitrypsin
Alpha-1 antitrypsin (AAT) testing uses a sample of blood or a cheek swab to diagnose a condition called alpha-1 antitrypsin deficiency (AAT deficiency). This condition is sometimes known as "alpha-." or AATD. If you have AAT deficiency, your body doesn't make enough AAT.
Source: MedlinePlus, U.S. National Library of MedicineNormal range
3 published ranges, each from a named source 150350 mg/dL drawn: all ages · American Board of Internal Medicine (Laboratory Test Reference Ranges)
- Normal
- 90–350 mg/dL (varies by lab)ABIM 150–350 · ARUP 90–200 · Mayo 100–190 mg/dL
These labs do not agree: the published adult ranges differ by up to 84%, so the same result can read as normal at one lab and be flagged at another — ABIM 150–350 · ARUP 90–200 · Mayo 100–190 mg/dL. Both are real published values, shown as each lab states them.
Ranges from ARUP Laboratories Test Directory, American Board of Internal Medicine (Laboratory Test Reference Ranges), Mayo Clinic Laboratories (Pediatric Test Catalog).All source ranges (3)
| Source | Sex | Age | Range |
|---|---|---|---|
| American Board of Internal Medicine (Laboratory Test Reference Ranges) | All | all ages | 150–350 mg/dL |
| ARUP Laboratories Test Directory | All | all ages | 90–200 mg/dL |
| Mayo Clinic Laboratories (Pediatric Test Catalog) | All | all ages | 100–190 mg/dL |
What an abnormal result can be associated with
- A high result
- Decreased circulating alpha-1-antitrypsin concentration
- A low result
- Decreased circulating alpha-1-antitrypsin concentration
details
- Sample
- Serum or plasma · LOINC
- Listed under
- Alpha-1 Antitrypsin Deficiency · Cirrhosis · COPD · Emphysema · Gallbladder Cancer · Hemochromatosis · Hepatitis · Hepatitis A · Hepatitis B · Hepatitis C · Jaundice · Liver Cancer
- Code
- LOINC 1825-9 · mg/dL
- Also known as
- A-1-AT, A1-AT, A1A, A1AT, AAT
See your own Alpha 1 antitrypsin Add a lab report and it is drawn against your lab's range, over time. Upload a Blood Test