Anti-HBs
Anti-HBs is the name for antibodies (subtype IgG ) that are directed against the membrane protein on the cell surface ( surface antigen ) of the hepatitis B virus . In the context of an illness , the disappearance of the HBs antigen ( HBsAg ) with the subsequent appearance of the anti-HBs antibody (so-called seroconversion ) usually indicates healing, in up to five percent of adults the infection becomes persistent ( chronic disease). In between there may be an interval of a few weeks in which neither HBs nor anti-HBs can be detected. The anti-HBs antibody remains seropositive for years (so-called serological scar ).
The vaccination with hepatitis B vaccine is nowadays usually with genetically engineered parts of the HBs antigen as a virosome . This induces anti-HBs antibodies. From an antibody titer of at least 100 IU / L, it is assumed that vaccination protection is effective in the event of a current possible infection.
