Let's review a topic I get asked fairly often by residents - Hepatitis B (HBV) serology interpretation.
A thread inspired by a chalk talk in resident clinic yesterday.
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Also an #IDDailyPearl!
There are 3 tests that give you all the information you'll need for most patients: HBV surface antibody (sAb), HBV core antibody (cAb), and HBV surface antigen (sAg).
In general: sAb indicates immunity, cAb exposure, and sAg active infection. More details below!
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