The second item of hepatitis B two-half test refers to hepatitis B surface antibody and the fifth item refers to hepatitis B core antibody. When both of them are positive at the same time, it generally indicates that the human body is in the period of recovery from acute infection or has been infected with the hepatitis B virus and has now recovered and has produced protective antibodies. Hepatitis B surface antibody is a protective antibody. A positive Hepatitis B surface antibody in the Hepatitis B P5 test indicates that the body’s immune system has produced antibodies against the surface antigen after being infected with the Hepatitis B virus. Hepatitis B core antibody (HBcAb) including IgM type is an important indicator for determining acute hepatitis B. It is the earliest specific antibody that appears in the blood after the body is infected with the hepatitis B virus, and usually lasts for 3-6 months, which is often indicative of a recent infection. HBcAb-IgG appears later and is not a protective antibody, which is often indicative of a previous hepatitis B infection. Patients who are positive for hepatitis B 2 and 5 may be further examined for the type of core antibody, and depending on the type, whether the infection is past or recent. If it is a previous infection, a high hepatitis B surface antibody titer is often indicative of immunity to hepatitis B. If it is a recent infection, 2 and 5 positivity indicates a recovery period with the possibility of surface antigen re-positive, and it is recommended that the hepatitis B two halves be retested at a later date. Therefore, in the event that the hepatitis B half-pair test is positive for both of the above, it is recommended to consult a doctor for further treatment under the guidance of a physician.