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Family Physician

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Are blood tests effective at detecting hepatitis B?

Answered by
Dr. Michelle Gibson James

General & Family Physician

Practicing since :2001

Answered : 16126 Questions

Posted on Mon, 10 Sep 2018 in Liver and Gall Bladder
Question: Can Hep B be detected by a blood test if it is dormant ?
Answered by Dr. Michelle Gibson James 56 minutes later
Brief Answer:

Can detect past resolved infection.

Detailed Answer:



Hep B results in certain reactions in the body. It causes the production of certain antibodies.

Antibodies are part of the body's immune response to any infection.

In addition to these antibodies, certain proteins called antigens are also present.

The type of antigen and antibody that are found on blood test for hep B vary according to whether a person had a recent infection, was infected a long time ago and active, infected a time ago and infection resolved or had received a vaccine.

In a person with past infection that resolved and with no ongoing problems.

According to the CDC, the following would be seen- HBsAg negative or not seen(this is an antigen called hepatitis surface antigen), Anti HB c and anti HB s positive (these are antibodies that would be found).

In a person with a recent infection or chronic infection or vaccination- different results would be seen.

Hope I have answered your query.

Take care

Dr. Michelle Gibson James, General & Family Physician
Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar

The User accepted the expert's answer

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