Serum hepatitis B surface antibody

Hepatitis B surface antibody, abbreviated as HBsAb or anti-HBs, is the corresponding antibody produced by the body when stimulated by HBsAg. It can be combined with HBsAg to clear the virus under the action of other immune systems in the body to protect the body from being affected by HBV infection. Therefore, anti-HBs are neutralizing antibodies with specific protective functions, and some anti-HBs indicate that the body has developed immunity. When anti-HBs can be detected in serum, HBsAg has been negative from serum for about 2 weeks. Clinically, the period when HBsAg turns negative and anti-HBs has not yet appeared is called the "empty window" period. At this time, only anti-HBc is positive, and the remaining serum immunological indicators are negative. Hepatitis B surface antibody (HBsAb) is an immunoreactive antibody (protective antibody) produced against hepatitis B surface antigen protein after the patient is infected with hepatitis B virus (HBV). It has certain effects on HBsAg. And effect.

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