A member asked:

Tested positive for hepatitis b approx 4mos after 3 blood transfusions. had already received the hep b vaccine years prior. did the blood transfusions cause it? had been negative for hep b in the past before vaccination?

2 doctors weighed in across 2 answers
Dr. Silviu Pasniciuc answered

Specializes in Internal Medicine

Context needed: Your immunity will reflect antibodies to hepatitis B surface antigen as a result of your vaccination. The type of antibodies as well as the context in which they were checked would be critical in determining if other, less likely scenarios, would be possible.

Answered 2/7/2021

5 views

Thank

Agree with Dr. P: Your doctor can order hep B antibody tests that can differentiate between vaccine and actual infection. Visit this site for info: https://www.cdc.gov/hepatitis/hbv/pdfs/serologicchartv8.pdf Wish you good health!

Answered 2/13/2021

5 views

Thank

Related Questions