What does HBsAg positive mean?

HBsAg positive refers to the presence of hepatitis B surface antigen, indicating that the body has been infected with the hepatitis B virus and is a carrier of the virus. HBsAg is the outer protein coat of the hepatitis B virus itself and is not infectious. However, its presence typically coincides with the existence of the hepatitis B virus and serves as a marker for hepatitis B virus infection.

A positive HBsAg result may indicate that the patient is at different stages of hepatitis B virus infection, such as the acute infection phase or the chronic carrier state. To determine the specific condition accurately, other indicators in the hepatitis B panel (such as hepatitis B e antigen, hepatitis B e antibody, and hepatitis B core antibody), along with liver function tests and hepatitis B virus DNA quantitative analysis, should be considered comprehensively.

For patients who are HBsAg positive, following medical advice is important. Regular monitoring of liver function may be necessary, and preventive measures should be taken to avoid transmitting the virus to others. Vaccination is the most effective way to prevent hepatitis B, but it cannot eliminate the virus in individuals who are already infected. In certain cases, if liver function is abnormal or severe complications exist, doctors may consider antiviral therapy.