Hepatitis B Surface Antibody 500+ indicates resistance to the hepatitis B virus. Hepatitis B Surface Antibody 500 is a quantitative test of Hepatitis B two-to-half, the normal value of this test for a normal person who has not been vaccinated against Hepatitis B is not more than 10. More than 10 suggests that there is resistance to Hepatitis B virus, which can be seen in the people who have been vaccinated against Hepatitis B, or those who have been infected with Hepatitis B and have recovered from the infection. The main component of hepatitis B vaccine is hepatitis B surface antigen, which can stimulate the body to produce hepatitis B surface antibody, and after infection with hepatitis B virus, the surface antigen produced by the virus can also stimulate the body to produce hepatitis B surface antibody. Hepatitis B surface antibodies can destroy the outer shell of the hepatitis B virus, which further leads to the necrosis of the hepatitis B virus and serves to prevent hepatitis B virus infection and morbidity. Simple hepatitis B virus surface antibody of more than 500 suggests that the resistance to hepatitis B is relatively strong, usually will not be re-infected with the hepatitis B virus, you can regularly review, when the antibody level drops to less than 10, it is necessary to do the hepatitis B vaccine booster injection in a timely manner.