A member asked:

Hep b surface ab results - my doc says a positive might not always stay positive?

A doctor has provided 1 answer
Dr. Michael P Vaughn answered

Specializes in Allergy and Immunology

Antibody levels : Antibodies can last a lifetime or disappear as we age. At one time patients were told that at age 65 they would only need one pneumonia shot, the current recommendation is to consider a booster after 5 years.

Answered 7/4/2014

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