The Hepatitis B Surface Antigen (HBsAg) Rapid Test is a diagnostic tool used to quickly detect the presence of the HBsAg antigen in blood samples. This test is designed to identify individuals who are currently infected with Hepatitis B virus (HBV) and can be used as an initial screening method in healthcare settings. The test works by detecting the presence of the HBsAg protein, which is found on the surface of HBV. A positive result from the HBsAg Rapid Test indicates that the person has an active HBV infection and may require further testing and medical attention. The test is simple to use, requires only a small blood sample, and produces results within minutes, making it a useful tool in the rapid diagnosis of Hepatitis B infections.