Diagnosing hepatitis B typically involves a series of blood tests that detect the presence of the virus, determine the stage of infection, and evaluate liver function. The key tests used for diagnosing hepatitis B include: 1. **Hepatitis B Surface Antigen (HBsAg) Test**: This test detects the presence of the hepatitis B virus surface antigen. A positive result indicates an active hepatitis B infection. 2. **Hepatitis B Surface Antibody (anti-HBs) Test**: This test checks for the presence of anti

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