Mayo Test Catalog, (Sorted By Test Name) - Mayo Medical ...

AAT
8161
A1M24
81036
1981;81:777-780 2. Crossley JR, Elliott RB: Simple method for diagnosing protein-losing enteropathy.
Br Med J 1977;1:428-429 3. Perrault J, Markowitz H: Protein-losing gastroenteropathy and the
intestinal clearance of serum alpha-1-antitrypsin. Mayo Clin Proc 1984;59:278-279
Alpha-1-Antitrypsin, Serum
Clinical Information: Alpha-1-antitrypsin (A1A) is the most abundant serum protease inhibitor and
inhibits trypsin and elastin, as well as several other proteases. The release of proteolytic enzymes from
plasma onto organ surfaces and into tissue spaces results in tissue damage unless inhibitors are present.
Congenital deficiency of A1A is associated with the development of emphysema at an unusually early age
and with an increased incidence of neonatal hepatitis, usually progressing to cirrhosis. See
Alpha-1-Antitrypsin-A Comprehensive Testing Algorithm in Special Instructions.
Useful For: Work-up of individuals with suspected disorders such as familial chronic obstructive lung
disease Diagnosis of alpha-1-antitrypsin deficiency
Interpretation: Patients with serum levels