Hi, thanks for your question. The recommendation to test at the 6 month post risk is based on taking PEP for 28 days. I consulted with our resident physician and the 4 1/2 days pf PEP will not have had any effect on suppressing the virus. So your testing is based on the time the risk took place. The test at 90 days or three months would show any HIV antibodies and that result would accurately reflect the risk. There is no need to do a 6 month test. Health Nurse
This answer was posted on December 12, 2017.