Exams and Tests
If you have
chronic HBV infection, you will need to visit your doctor
regularly. He or she will do blood tests to monitor your liver function and the
activity of the hepatitis B virus in your body. Some of the tests can tell your
doctor whether HBV is actively multiplying in your liver,
which increases your risk for chronic
hepatitis. Chronic hepatitis can lead to
liver cancer (hepatocellular carcinoma).
The CDC recommends that all pregnant women have
the hepatitis B surface antigen test. This test can tell if a woman has an
active HBV infection. This test also may be repeated later in the pregnancy if
a woman is at high risk for infection. For more information on risk factors,
see the What Increases Your Risk section of this topic.
were exposed to the hepatitis B virus in the past, especially people who moved
to the United States from a country where the virus is common, often develop
lifelong protection (immunity) against HBV and do not need to be vaccinated.
But people from countries where HBV infection is common may carry the virus and
should be screened for the virus.
You can be tested for
hepatitis B before getting vaccinated.
- Antibody testing will show if you have an active hepatitis B infection and need treatment.
- If testing shows you are already protected against hepatitis B, you will not need to get the hepatitis B vaccine(What is a PDF document?).
- You can receive the
hepatitis B vaccine even if you already have antibodies against HBV in your
blood, and no harm will result.