A 27-year-old man has been taking HIV preexposure prophylaxis (PrEP) with daily oral tenofovir DF-emtricitabine for approximately 6 months, and he rarely misses a dose. He typically has sex with women, but 1 day ago, he had condomless receptive anal sex with a new male partner. He just found out the male partner has HIV and is not consistently taking antiretroviral therapy. He wants to be evaluated for HIV nonoccupational postexposure prophylaxis (PEP) since he is very concerned about the very recent HIV exposure from the male partner.