Laboratory Examination To Determine Whether A Person’s Body Already Has Antibodies Against Hepatitis B Infection Or Not?

Illustration of Laboratory Examination To Determine Whether A Person’s Body Already Has Antibodies Against Hepatitis B Infection Or Not?
Illustration: Laboratory Examination To Determine Whether A Person’s Body Already Has Antibodies Against Hepatitis B Infection Or Not? Bing

Good evening doctor, I want to ask if the anti-HBs is reactive with a value of 20 mIU/mL, does that mean I’m immune? I want the hep B vaccine is it necessary?

1 Answer:

Hello, good afternoon Kovida.

Anti HBs (Hepatitis B Surface Antibody) is a laboratory test parameter to determine whether a person's body already has antibodies (immunity) against hepatitis B infection or not. Reactive (positive) anti-HBs with non-reactive (negative) HBsAg indicates two possibilities, namely that the person has previously received hepatitis B immunization, or the person has recovered from hepatitis B infection. Anti-HBs levels after vaccination can continue to decrease over time. time. Anti-HBs levels above 10mIU/mL are usually found in people who have taken the full course of the hepatitis B vaccine. Regarding whether you (anti-HBs level 20 mIU/mL) need hepatitis vaccine, the answer depends on your health condition. In general, the results of a positive (reactive) anti-HBs examination do not require revaccination, but in patients undergoing dialysis (hemodialysis) and who have immunocompromised disease (weak immune system) such as in HIV patients, patients undergoing chemotherapy, etc. If anti-HBs levels are below 10 mIU/mL, a booster vaccine may be considered. Other considerations can also affect the possibility of needing a vaccination or booster (repeat), i.e. history of previous illness, work history, etc. Please consult a doctor before you do vaccinations/boosters.

That's all, hope it helps.

Regards, dr. Denisa

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