Hepatitis B Surface Antibody is called Hepatitis B Surface Antibody, Hepatitis B Surface Antibody 15, Hepatitis B Surface Antibody titer is greater than 10mIU/mL that is positive, it has a certain protective effect on the organism. Hepatitis B surface antibody is a kind of protective antibody. Generally speaking, when the hepatitis B surface antibody is positive, i.e. greater than 10mIU/mL, it means that the antibody has been produced, i.e. it has a protective effect, and it has immunity against the hepatitis B virus, which effectively reduces the risk of being infected by the hepatitis B virus. The higher the Hepatitis B surface antibody titer, the better the protective effect on the human body. If the antibody titer is lower than 10 U/mL, the protective effect has basically disappeared, and cannot resist the invasion of hepatitis B virus, and should be re-vaccinated with hepatitis B vaccine to improve the antibody titer. Therefore, Hepatitis B surface antibody 15 has a protective effect, but the value is low, it is recommended to go to the hospital to consult the doctor, and if necessary, should be supplemented with Hepatitis B vaccine to increase the amount of antibody to achieve better protection.