Hepatitis B Serology; Very High Yield for the exam - USMLE Forums
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USMLE Step 1 Bits & Pieces High yield short focused points, monographs, charts, illustrations, tables, and other stuff related to the USMLE Step 1 Exam.


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Old 09-01-2012
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Virus Hepatitis B Serology; Very High Yield for the exam

As Hep B antigens and antibody questions are always high yield. So just wanna discuss few points because when i do some questions. In many questions i mark correctly but sometimes i can't answer properly. So just wanna know is it trickiness of questions or i lack some info.

According to my understanding

Acute infection: HBsAg and HBeAg +ve
Recovery: Anti-HBsAg and anti-HBeAg +ve
Chronic infection with high infectivity: person must have HBeAg
Chronic infection with low infectivity: Person must have Anti-HBeAg
Window: only Anti-HBcAg present
Immunized: only Anti-HBsAg

Anti-HBcAg IgG and IgM give information about acute or chronic condition.
I just mentioned important antigen and antibodies.

Please add more stuff if I missed anything.
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Old 09-01-2012
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Quote:
Originally Posted by koolkiller88 View Post
Acute infection: HBsAg and HBeAg +ve
Chronic infection with high infectivity: person must have HBeAg
acute infection------IgM HBcAb,HBsAg and HBeAg +ve
chronic infection with high infectivity------IgG HBcAb , HBsAg and HBeAg +ve
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Old 09-02-2012
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Yes, and the Anti-HBcAg in the window period would be IgM too.
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Old 09-27-2012
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Listening Hepatitis B

Quote:
Originally Posted by dockhi View Post
Yes, and the Anti-HBcAg in the window period would be IgM too.
Chronic HBV Also Anti HbC Ab will be present
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