AST blood test measures the amount of aspartate transferase in your blood. In most cases, your healthcare provider uses an AST blood test to help assess the health of your liver, but it can provide insight into other health conditions as well.

ALT test measures the amount of Alanine Transaminase in your blood. This test is commonly used to help diagnose liver damage or disease. ALT is an enzyme, a protein that speeds up certain chemical reactions in your body.

ALP test measures the amount of Alkaline Phosphatase in your blood. ALP is an enzyme, a protein that speeds up certain chemical reactions in your body. ALP is found in all your body tissues, but higher amounts can be found in your liver, bile ducts, and bones.