Hepatitis B Surface Antigen Test - Hepatitis B Surface Antigen (HBsAg) Test

A highly sensitive qualitative immunoassay to detect the presence of surface antigen (HBs Ag) of hepatitis B virus (HBV) in a serum sample. This test is considered the cornerstone in diagnosing acute and chronic hepatitis B infection, as the presence of this antigen in the blood indicates active infection (either acute or chronic) and the virus's ability to transmit to others.