Anti-HBs
Antibody to hepatitis B surface antigen
Antibody to hepatitis B surface antigen, indicating immunity after recovery or vaccination.
Overview
EXPLORE BY LEVELAn antibody against hepatitis B surface antigen. It may follow vaccination or recovery from infection, so it is read with other hepatitis B markers. is an A protein made by B-cell descendants that binds a particular molecular target. Binding does not by itself prove that the antibody neutralizes it. that protects against hepatitis B. People make it after An intervention that presents antigenic information to help establish an immune response and, for some vaccines, memory. or after recovering from infection.
Quick Facts
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Recommended Reading
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Research Claims
Anti-HBs alone cannot show whether immunity came from vaccination or past infection; total anti-HBc is needed for that.
Anti-HBs is part of CDC's triple panel so that one blood draw can identify people who are immune and those who need vaccination.