https://www.1mg.com/labs/test/liver-function-test-2562 Liver function test (LFT) includes a group of blood tests commonly performed to evaluate the function of the liver. This test measures the level of liver enzymes, proteins, and bilirubin in the blood. The Liver Function Test is performed:As a part of a routine health checkupTo diagnose any suspected liver disease like viral hepatitis, alcoholic hepatitis, autoimmune hepatitis or to measure the extent of cirrhosis (scarring of the liver)To monitor an existing liver disease and to evaluate the efficacy of the treatment being given for the sameTo monitor the liver function in case you are taking some medicines, that are known to have a harmful effect on the liver