To check for Hepatitis B antibodies, a blood test for Hepatitis B V is required, and you can register for this in various departments of the general hospital. If you are clearly suffering from hepatitis B or are a family member of a hepatitis B patient and want to be systematically tested, it is recommended to hang up with the Department of Hepatology of the Infectious Diseases Hospital. The most important of the five hepatitis B tests are mainly the results of the first and second tests. The first one is Hepatitis B surface antigen. If the Hepatitis B surface antigen is positive, it indicates that you have been infected with the Hepatitis B virus, including Hepatitis B carriers and Hepatitis B patients, and you need to undergo other systematic tests at this time. The second one is Hepatitis B surface antibody test, if it is positive, it means that he/she has been vaccinated against Hepatitis B and has produced antibodies against the virus, so he/she does not need to worry about the problem of re-infection.