Liver function test is not able to find out whether you have hepatitis B. The liver function test generally refers to the liver function indicators of transaminases and bilirubin. Liver function test generally refers to transaminases, bilirubin, these liver function indicators, through the examination of these indicators can not determine whether the body is infected with hepatitis B. It can only determine whether there is an abnormality in liver function. It can only determine whether the liver function is abnormal. Liver function is a relatively routine biochemical test indicators, liver function test if abnormal liver function, can be caused by many reasons, such as fatty liver, alcohol liver, drug liver. It does not determine whether the hepatitis B virus infection is the cause. Hepatitis B is caused by a hepatitis B virus infection, which requires antigen, antibody, or nucleic acid to determine. If you need to determine whether you are infected with hepatitis B, you will need to take further tests such as hepatitis B half-pair test and hepatitis B DNA to determine whether you are infected with the hepatitis B virus.