Hepatology, Infectious Diseases, Infectious Diseases and other departments are usually available for hepatitis B half-pair test. 1. Hepatology: Hepatitis B belongs to a kind of liver disease, if the hospital has a hepatology department, you can choose to register in the hepatology department, according to the professional doctor’s bill to do hepatitis B half-pair test. 2. Infectious diseases: Hepatitis B is an infectious disease, if the hospital set up infectious diseases, you can also choose to hang up infectious diseases. If you indicate to the doctor of the infectious disease department that you need to be tested for Hepatitis B half-pair test, the doctor will issue an order for the test. 3. Infection Department. Due to the different departments in different hospitals, some hospitals may have an infectious disease department but not an infectious disease department, in this case, you can also choose to register in the infectious disease department. If you want to take hepatitis B half-pair test but don’t know how to hang up the department, you can consult the professional staff of the hospital and then choose.