A member asked:

I recently had blood work done and was told my hepatitis b surface antibody is low. is a "booster" recommended, or am i still protected?

6 doctors weighed in across 2 answers
Dr. Hunter Handsfield answered

Specializes in Infectious Disease

Still protected: If you had the complete series of hepatitis B virus vaccine, i.e. all three doses, then you are protected, even with low HBs antibody. No booster is needed. Don't worry about it.

Answered 3/26/2017

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Booster: If you are below the threshold for immunity then an additional dose may help.

Answered 3/30/2017

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