<unk>  <unk>  is a<unk>  enzyme (). It is also called<unk>  aminotransferase <unk>  or ALAT) and was formerly called serum glutamate-pyruvate<unk>  or serum glutamic-pyruvic<unk>  (SGPT) and was first characterized in the mid-1950s by Arthur Karmen and colleagues.<unk>  is found in plasma and in various body tissues but is most common in the liver. It catalyzes the two parts of the<unk>  cycle. Serum<unk>  level, serum AST (aspartate<unk>  level, and their ratio (AST/ALT ratio) are commonly measured clinically as biomarkers for liver health. The tests are part of blood panels. The half-life of<unk>  in the circulation approximates 47 hours. Aminotransferase is cleared by sinusoidal cells in the liver.
Alanine transaminase
Lumirubin
Tartrate-resistant acid phosphatase
Bile acid
Acid phosphatase
Hematocrit
Uric acid
Bilirubin