Multiple choice

Which immune marker is observable during the window period of HIV infection?

  1. Antigen p17

  2. p24 antigen

  3. Antibodies to gp41

  4. Antibodies to gp120

  5. Antigen p17
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The window period is the period between the onset of HIV infection and the appearance of detectable antibodies to the virus. The purpose of the p24 antigen portion of the test is to detect HIV before body has made antibodies, i.e., in the window period.

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