Hepatitis B core antibody (anti-HBc or HBcAb) is high or positive, indicating that the patient may be infected with HBV or has been infected with HBV before, and the details should be analyzed in conjunction with the results of other markers of HBV test. Hepatitis B 2:1/2 test is commonly used in clinic, what the high or positive core antibody of hepatitis B virus indicates should be analyzed with the results of other markers. 1. Only hepatitis B virus core antibody is high or positive, or combined with hepatitis B virus surface antibody is high or positive, indicating that the patient had HBV infection in the past, but has recovered and is not infectious. 2. Hepatitis B virus core antibody, hepatitis B virus e antibody, hepatitis B virus surface antibody is high or positive, indicating that the patient is in the recovery stage of HBV infection; the infectiousness is low. 3. Hepatitis B Virus Surface Antigen, Hepatitis B Virus e Antigen, Hepatitis B Virus Core Antibody, Hepatitis B Virus Core Antibody IgM is high or positive, indicating that the patient is in the stage of recovery from HBV infection; the infectiousness is low. Therefore, it is recommended that the patient go to the hospital and be given specific instructions after the doctor analyzes the results according to other hepatitis B virus test markers.