Alanine Aminotransferase (ALT) is an enzyme found primarily in liver cells. It plays a role in the metabolism of proteins and is released into the bloodstream when liver cells are damaged.

Aspartate Aminotransferase (AST) is an enzyme found in several tissues, including the liver, heart, muscles, kidneys, and brain.

Alkaline Phosphatase (ALP) is an enzyme found in several tissues throughout the body, with the highest concentrations in the liver, bile ducts, and bones. It plays a role in breaking down proteins and is involved in normal bone mineralization and development.

Total Bilirubin is a substance produced during the normal breakdown of red blood cells. The liver processes bilirubin so it can be excreted from the body.