Hepatitis B 1.5 positive test indicates hepatitis B virus infection. Hepatitis B 1.5 positive refers to the hepatitis B penta test, i.e., the first item of the hepatitis B surface antigen and the fifth item of the hepatitis B core antibody are positive, which is medically called “hepatitis B small two yang”, indicating that the hepatitis B virus is infected. Hepatitis B virus DNA can be used to determine the level of infectiousness. Based on other results, such as liver function and liver ultrasound, the severity and need for antiviral treatment can be determined. If you have hepatitis B 1.5 positive, you need to pay attention to the following aspects: 1. Hepatitis B 1 positive indicates that the patient has hepatitis B virus in his body and is in the stage of being infected; Hepatitis B 5 positive indicates that the patient has been infected by hepatitis B virus. To determine the severity of the disease, further liver function, liver ultrasound and HBV-DNA examination should be completed. 2. If liver function and HBV-DNA are normal, it means that the patient is a carrier of hepatitis B virus, and it is enough for regular review, and once abnormality occurs, find out the cause in time and take corresponding treatment. 3. Hepatitis B 1.5 positive is contagious, need to pay attention to preventive measures to avoid infecting others. Maintain a balanced diet, appropriate exercise, relaxation.