Hepatitis B Surface Antibody
Hepatitis B surface Antibody - Only one sample of blood is needed for a hepatitis B blood test, but the “Hepatitis B Panel” includes three parts. All three test results are needed to fully understand whether a person is infected or not. Below is an explanation of the 3-part “Hepatitis B Panel” of blood test results. HBsAb (Hepatitis B surface antibody) - A "positive" or "reactive" anti-HBs or HBsAb test result indicates that a person is protected against the hepatitis B virus. This protection can be the result of receiving the hepatitis B vaccine or successfully recovering from a past hepatitis B infection. This test is not routinely included in blood bank screenings. A positive anti-HBs (or HBsAb) test result means you are “immune” and protected against the hepatitis B virus and cannot be infected. You are not infected and cannot spread hepatitis B to others.
Why a doctor may order this
To confirm immunity after vaccination or recovery from hepatitis B; used for immunity status checks.
Why you may need this
To check if you are immune to hepatitis B (after vaccination or past infection).
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