I recently done a HIV ELISA Duo testing on October 19th 2018. I am based in Canada so ELISA Duo Test is the one offered in all of the STD clinics within my province based on the Provincial Health Services bulletins. From what I read, ELISA Duo Test checks for both the antigen and the antibody.
The last sexual encounter I had was September 30th with protected oral and vaginal sex with a woman whose sexual history I do not know, but is not a drug user but may have frequent partners. I've never had a unprotected vaginal intercourse with a partner whose medical history I am unfamiliar with. The last time I had unprotected oral was on August 16th about 2 months before my HIV test. I received my results via phone from the nurse at my local STD clinic and she informed me that my test result is negative for HIV. Which based on what I've read clears me for everything except the encounter on September 30th, because apparently the window period for ELISA Duo Test is 6 weeks to 3 months.
However, my question is that, since my last sexual encounter was on September 30th for both protected oral and vaginal sex, is my negative testing result conclusive? Should I be tested again? And what is the window period for ELISA Duo Test?
Would appreciate any experienced posters help and if possible any doctor responses.