Alanine Aminotransferase (ALT)

Alanine aminotransferase is an enzyme that is located exclusively in the cytosol of liver cells and participates in modifying amino acids. Often tested in conjunction with aspartate aminotransferase. ALT is one of the several tissue enzymes that catalyze the interconversion of amino acids and oxoacids by transfer of amino groups. Aminotransferase activity reflects the rate at which enzymes enter and are cleared from the circulation. Assists in the diagnosis of acute liver damage.