One day after a casual sexual encounter with a bisexual man recently diagnosed as antibody-positive for HIV, a patient is concerned about whether she may have become infected. A negative antibody titer is obtained. To test for seroconversion, when is the earliest you should reschedule repeat antibody testing after this sexual encounter?

Persons at high risk for infection by human immunodeficiency virus (HIV) include homosexuals, bisexual males, women having sex with a bisexual or homosexual paner, intravenous drug users, and hemophiliacs. Antibody titer usually becomes positive 6 to 12 weeks after exposure, Because of occasional delayed appearance of the antibody after initial exposure, it is impoant to follow up patients for 1 year after exposure.