Background Hepatitis B virus (HBV) is a common cause of viral ... all orders for HBsAg within a 17 month time period. Detailed chart review was performed to identify all patients who were ...

HBsAg is the hallmark of HBV infection and is the first serological marker to appear in acute hepatitis B. Most patients recovering from acute hepatitis B clear HBsAg within 4-6 months after onset ...