After completing the PEP course will the patient be HIV negative?

  • PEP does not always prevent HIV infection.
  • It can fail because some anti-HIV drugs don’t work against some strains of HIV.
  • It is more likely to fail if it is not taken properly or soon enough.

 

When will the patient know that he or she is HIV negative?

  • An HIV test is very reliable if done no sooner than 45 days after completion of PEP.
  • If a 28 day course is completed this is 10.5 weeks post exposure. This could be delayed to 12 post exposure weeks to align with syphilis testing.