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Serum Anti-HBs

Specimen Required

3-5cc Clotted Blood or Serum

Fasting Required

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Purpose of the Test

The Serum Anti-HBs test is typically ordered to determine if someone has immunity to HBV and to monitor the effectiveness of the hepatitis B vaccine.

When this test is required

The test is typically ordered if you have received the hepatitis B vaccine or have been exposed to HBV.

What the Test Detects

The Serum Anti-HBs test is used to detect the presence of antibodies to the HBV surface antigen in the blood.

Preparation for the Test

No specific test preparation is required, but you should inform your healthcare provider if you are taking any medications that may affect the results.

Sample Requirements

The test requires a blood sample, usually drawn from a vein in the arm.

Additional Notes

It’s important to follow your healthcare provider’s instructions and to discuss any concerns you may have about the test or its results. If you test negative for Anti-HBs, your healthcare provider may recommend re-vaccination or additional testing to determine if you have developed immunity to HBV. It’s also important to take steps to prevent the spread of HBV to others, such as practicing safe sex, avoiding sharing personal items, and getting vaccinated against HBV if you are not already immune.