A member asked:

My son is 18 and had bloodwork done from not feeling week and he tested negative for hep b but he also tested negative for jen b antibodies from the vaccine but he has been fully vaccinated. is this possible or should we retest or get revaccinated?

Q: my son is 18 and had bloodwork done from not feeling week and he tested negative for hep b but he also tested negative for jen b antibodies from the vaccine but he has been fully vaccinated. is this possible or should we retest or get revaccinated?

: It seems your son had not developed anti-HBsAg (antibody to hepatitis B surface antigen) which happens in less than 5% of individuals receiving Hep B vaccinations, which means he is still susceptible to Hep B infection. I would recommend him to get revaccinated, 3 doses at 0, 1, 6 months and retested.

A doctor has provided 1 answer

Dr. Jay Park answered

It seems your son had not developed anti-HBsAg (antibody to hepatitis B surface antigen) which happens in less than 5% of individuals receiving Hep B vaccinations, which means he is still susceptible to Hep B infection. I would recommend him to get revaccinated, 3 doses at 0, 1, 6 months and retested.

Answered 7/26/2023

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A member asked:

My son is 18 and had bloodwork done from not feeling week and he tested negative for hep b but he also tested negative for jen b antibodies from the vaccine but he has been fully vaccinated. is this possible or should we retest or get revaccinated?

A doctor has provided 1 answer

Dr. Jay Park answered

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