Surface antibodies are one of the two pairs of hepatitis B (also known as the five hepatitis B tests). Hepatitis B, also known as viral hepatitis B, is an infectious disease caused by the hepatitis B virus that infects the body. The hepatitis B virus has an antigen on its surface called surface antigen. After the hepatitis B virus enters the body, the body’s immune system recognizes the surface antigen carried by the hepatitis B virus, and after a certain period of time, usually 3-6 months, it will produce an antibody specifically against the hepatitis B surface antigen, which is a surface antibody. Hepatitis B surface antibody, is a protective antibody for the body. A test for Hepatitis B V or Hepatitis B VI, which reveals that the blood is positive for surface antibodies, indicates that the body already has a degree of resistance to the Hepatitis B virus. The hepatitis B vaccine given to people at birth is also designed to allow the body to produce hepatitis B surface antibodies.