Liver function tests cannot detect hepatitis B. If you want to detect hepatitis B, you need to have a hepatitis B two-to-one test. If the hepatitis B two-to-one test is positive for hepatitis B surface antigen, you will be identified as a hepatitis B virus carrier. The HBV-DNA test is a test to detect the hepatitis B viral load. Liver function tests are tests to detect liver damage, focusing on various liver enzymes, bilirubin and albumin. Elevated liver enzymes indicate liver damage, with glutathione and glutamic aminotransferase being representative, or elevated bilirubin also indicates liver damage, and severe liver damage can cause albumin to drop.