Positive hepatitis B core antibody alone suggests that the body has been or is infected with the hepatitis B virus, and needs to be combined with the results of the hepatitis B DNA test to make a comprehensive judgment, and it is recommended that the diagnosis be made under the guidance of a doctor. Positive core antibody is one of the results of Hepatitis B 5, which is short for Hepatitis B core antibody, and its positivity indicates that the body has been or is being infected with Hepatitis B virus. Positive core antibody alone requires further testing for surface antigen. If the hepatitis B DNA is negative on the basis of negative surface antigen, it indicates previous infection with the hepatitis B virus; if the hepatitis B DNA is positive, it indicates insidious infection with the hepatitis B virus, which requires prompt antiviral treatment. Positive core antibody alone suggests that one has been infected or is being infected with the hepatitis B virus, and needs to be combined with the results of hepatitis B DNA and other tests to make a comprehensive judgment, and it is recommended that the diagnosis be made under the guidance of a doctor.