Hepatitis B Immunity Status Test

A hepatitis B immunity status test, also known as a hepatitis B surface antibody (anti-HBs) test, is a blood test that measures the levels of antibodies in the blood that indicate immunity to the hepatitis B virus.

This test is typically done to determine if a person has developed immunity to hepatitis B either through vaccination or prior infection. It can help healthcare providers assess the need for vaccination or determine if further testing or treatment is necessary for those at risk for hepatitis B.

If the test results show that the levels of hepatitis B surface antibodies are present in the blood at a certain level, it indicates that the person is immune to hepatitis B. If the antibody levels are below the protective threshold, the person may not be immune and may need further testing or vaccination.