The Liver Function Test (LFT) is a group of blood tests that evaluate the overall health of your liver by measuring enzymes, proteins, and substances produced by the liver. Common markers in an LFT include ALT, AST, ALP, bilirubin, albumin, and total protein. Elevated levels can indicate liver inflammation, damage, or disease, such as hepatitis, fatty liver, or cirrhosis. These tests help diagnose liver disorders, monitor the progression of liver diseases, and check how well treatments are working.