Which result indicates immunity against Hep B?

Which result indicates immunity against Hep B?

• A. HBsAb
• B. HBsAg
• C. Anti-HBc
• D. HBeAg

Answer: (A)

Immunity to Hepatitis B is shown by the hepatitis B surface antibody in the blood. This antibody appears after completing vaccination or recovering from infection and provides protection by neutralizing the virus on future exposure. The presence of surface antigen (HBsAg) would mean an active infection, not immunity, and the body is trying to clear it. Anti-HBc reflects prior exposure to the virus (core antibody) but does not by itself confer protective immunity. HBeAg indicates ongoing viral replication and high infectivity, not immune status. So, detecting HBsAb confirms that a person is currently or has become immune to Hepatitis B.

Immunity to Hepatitis B is shown by the hepatitis B surface antibody in the blood. This antibody appears after completing vaccination or recovering from infection and provides protection by neutralizing the virus on future exposure. The presence of surface antigen (HBsAg) would mean an active infection, not immunity, and the body is trying to clear it. Anti-HBc reflects prior exposure to the virus (core antibody) but does not by itself confer protective immunity. HBeAg indicates ongoing viral replication and high infectivity, not immune status. So, detecting HBsAb confirms that a person is currently or has become immune to Hepatitis B.