Anti-HBs (Hepatitis B Surface antibody)

Hepatitis B is an inflammation of the liver that is caused by an infection with the hepatitis B virus (HBV). The infection can be acute (short and severe) or chronic (long term). It can spread through contact with infected body fluids like blood, saliva, vaginal fluids and semen. It can also be passed from a mother to her baby.

The Anti-HBs (Hepatitis B Surface antibody) test provides information about a current or past infection with HBV. Also, it may be used to diagnose hepatitis B, assess its severity, and determine whether you have immunity to this disease. Understanding your immunity status is important for several reasons, including verifying the effectiveness of the Hepatitis B vaccine, deciding if you need additional vaccination or booster doses, and screening blood donors to ensure that they don't carry the virus. 

The Anti-HBs (Hepatitis B Surface antibody) test is recommended for infants born to mothers who may have hepatitis B, workers who are likely to be exposed to blood and body fluids, individuals  on kidney dialysis, immunocompromised individuals and those who have a Hepatitis-B positive partner. Your doctor may also suggest this test to screen for hepatitis infection, diagnose and evaluate HBV infection, to assess past HBV infection and future immunity, to monitor the disease progression and treatment response. 

Hepatitis B can be prevented with a safe and effective vaccine. The Anti-HBs (Hepatitis B Surface antibody) test helps to determine if vaccination is needed or, following a vaccination regimen, if protective immunity has been achieved.

No special preparation is required for the Anti-HBs (Hepatitis B Surface antibody) test. However, inform your doctor about any medications, supplements or any underlying medical conditions you may have, as these factors could potentially affect the test results. 

Lab test results may vary across laboratories. Abnormal test results require an expert interpretation; therefore, never try to self-medicate at home based solely on these results, and always consult a doctor for a proper understanding of the test results.