A 48-year-old member asked:
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how long does the hepatitis b vaccine itself stay inside your body?

1 doctor answer
Dr. Vivek Huilgol
35 years experience Gastroenterology
Interesting ?: The substance injected probably last a few weeks at most. But the response brought about by the vaccine series (all 3 shots) may last forever. I ugh eat checking titters after vaccination in high-risk patients then checking levels again every ten years. Boosters given if needed.
Answered on Dec 9, 2017
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A 33-year-old member asked:
Dr. Martin Raff
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Generally 12 yrs: Or more. You can be retested for antibody titers if there is a question of potential for exposure.
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