Hepatitis B Surface Antigen Test (HBsAg)
Hepatitis B Surface Antigen Test is recommended to identify the hepatitis B virus, a disease that affects the liver.
Hepatitis B Surface Antigen is the earliest indicator of the presence of acute infection. Also indicative of chronic infection. This test is useful in the differential diagnosis of Hepatitis B.
The Surface Antigen Test looks for a protein present in the surface of the virus so is often ordered for people believed to have a recent exposure to someone else with Hepatitis B.
To diagnose hepatitis B in a pregnant woman additional test should be ordered such as liver enzymes.
Preparation: Fasting is not necessary for this test. If you normally take Biotin, please stop ingesting it 72 hours before the test.
You can order this test individually or as part of the following panels: