Question Title

* A patient’s laboratory results for hepatitis B include:

       Hepatitis B surface antigen (BBsAg) – negative

       Hepatitis B core antibody (antiBHc) – positive

       Hepatitis B surface antibody (antiHBs) – positive

The results indicate the patient has had hepatitis B in the past and now is

The correct answer is the patient is now immune due to natural infection.

Rationale: Positive core and surface antibodies indicate immunity through past infection. A negative surface antigen indicates no current infection.

Reference: Core Curriculum, Module 2, pp. 349 – 350; CDC Guidelines – Interpretation of Hepatitis B Serologic Test Results – www.cdc.gov/hepatitis
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