Hepatitis B 5 report only positive core antibody is usually normal. Only the core antibody of hepatitis B is positive, but the other items are negative, which means that you have been infected by hepatitis B virus, but now you have recovered, and you lack protective antibody, you can get hepatitis B vaccine to prevent you from being infected by hepatitis B virus again. Hepatitis B Penta 1 is positive, which means that you have been infected by Hepatitis B. The second item of Hepatitis B Penta 2 is positive. The second item of Hepatitis B 5 is a surface antibody, which is positive to show that protective antibodies have been produced. In order to understand the condition of the liver, liver function tests, liver ultrasound and other tests can be done, and if necessary, quantitative testing of hepatitis B virus DNA should be done. People who are only positive for core antibody in hepatitis B report should pay attention to protecting the liver, should not take medication on their own, and should have regular checkups.