What is an AST blood test? AST stands for “aspartate aminotransferase,” an enzyme found in several organs, including the liver. An AST blood test is part of a diagnostic process to find out if ...

An AST blood test measures levels of aspartate aminotransferase (AST) and helps determine liver function. Less than 40 IU/L is normal, but too much of this enzyme can indicate a problem, such as ...

Liver Panel Blood Test. ALT usually is done as part of a group of liver function tests called a liver panel. This panel also includes an aspartate aminotransferase (AST) test.