IMMUNOLOGY

Detailed explanation-1: -Hepatitis B surface antibody (anti-HBs): The presence of anti-HBs is generally interpreted as indicating recovery and immunity from hepatitis B virus infection. Anti-HBs also develops in a person who has been successfully vaccinated against hepatitis B.

Detailed explanation-2: -For hepatitis B surface antibody (anti-HBs), a level less than 5 mIU is considered negative, while a level more than 12 mIU is considered protective. Any value between 5 and 12 mIU is indeterminate and should be repeated.

Detailed explanation-3: -A positive or reactive result means you have the hepatitis B virus and further testing is needed to determine if this is a new (acute) or long-standing (chronic) hepatitis B infection. A positive or reactive anti-HBs (or HBsAb) test result indicates your immune system is active against the virus.