Liver Function Tests (LFTs) are a group of blood tests that help assess the health of the liver. These tests measure levels of various enzymes, proteins, and substances produced by the liver, such as alanine aminotransferase (ALT), aspartate aminotransferase (AST), and bilirubin. Abnormal results can indicate liver damage, inflammation, or disease. Doctors often order LFTs to diagnose conditions like hepatitis, cirrhosis, or fatty liver disease. They can also monitor the effectiveness of treatments and the liver's ability to function properly. Regular testing can help catch liver issues early, improving treatment outcomes.