what is the blood test for the liver
Liver tests check the blood for two main liver enzymes: 1  Aspartate aminotransferase (AST), formerly called SGOT; the AST enzyme is also found in muscles and many other tissues besides the liver. 2  Alanine aminotransferase (ALT), formerly called SGPT; ALT is almost exclusively found in the liver.ost often, a liver test panel is ordered as a routine lab test. Many doctors check the liver in new patients or during annual physicals. Your doctor may conduct liver enzyme and liver function tests if: 1  You are taking a medication that can harm the liver. 2  You have liver disease.