HEPATITIS B ENVELOPE ANTIGEN (HBeAg)

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Why Get Tested?

Often used as a marker of ability to spread the virus to other people (infectivity); it may also be used to monitor the effectiveness of treatment. However, there are some types (strains) of HBV that do not make e-antigen; these are especially common in the Middle East and Asia. In areas where these strains of HBV are common, testing for HBeAg is not very useful to determine whether the virus can be spread to others.

When to Get Tested?

When you have risk factors for HBV infection or when you have signs and symptoms of acute hepatitis; when you have a condition that requires chemotherapy or drugs that suppress your immune system and you might have been exposed to HBV in the past; when you are being treated for HBV.

Sample Required?

A blood sample drawn from a vein in your arm.

Test Preparation Needed?

None

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