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Hepatitis B virus tests are blood tests. They check for substances in your child's blood that show whether your child has hepatitis B now or had it in the past. The tests can help tell you if your child may have the disease long-term, how severe it is, and how easily it can be spread. They also can show if your child is protected from getting the disease.
If your child has the tests soon after being infected with hepatitis B, the results may show that your child doesn't have the disease even when they have it. The substances that show a hepatitis B infection can take weeks or months to form. They may not be in your child's blood yet.
Your child may need testing if:
The tests also are done to help your doctor decide about your child's treatment and to see how well it's working.
You don't need to do anything before your child has these tests.
A health professional uses a needle to take a blood sample, usually from the arm.
Follow-up care is a key part of your child's treatment and safety. Be sure to make and go to all appointments, and call your doctor or nurse advice line (811 in most provinces and territories) if your child is having problems. Ask your doctor when you can expect to have your child's test results.
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Adaptation Date: 2/28/2022
Adapted By: Alberta Health Services
Adaptation Reviewed By: Alberta Health Services
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