Hepatitis B (HBV) - core Ab
HBcAb is a specific antibody produced against HBcAg. After HBV infection, the human body produces IgM and IgG. IgM appears in the early stages of infection and is used to diagnose acute hepatitis B. During the chronic phase, IgM disappears, and HBcAb remains in the blood. Testing for HBcAb helps in diagnosing chronic hepatitis B.