What is HbsAg test?
Hepatitis B surface antigen (HBsAg) is a screening test that appears in the Serum at 6 to 16 weeks after exposure to a hepatitis B virus. In acute infection, HBsAg (antigen) usually disappears in 1 to 2 months after the onset of symptoms. However, the persistence of HBsAg for more than 6 months could indicate a chronic hepatitis B infection or if the person is a carrier of the virus.
Why get the HbsAg test?
The hepatitis B surface antigen test (HBsAg) is used to detect a recent or long-standing infection from the hepatitis B virus (HBV). A positive or reactive HBsAg test result means that the person is infected with the hepatitis B virus.
When to take this test?
AnytimeBased on doctor adviceNo particular precautions are required, unless it is recommended by your doctor.HbsAg