Dr. Jose Gonzalez-Garcia, MD, MBBS, LMS, MRCP(UK), MRCGP, PhD
Dec 06, 2011 To: jjllmm
Thank you very much for your post and welcome to our forum. I am afraid that it is going to be me answering your question, and not my colleague, Dr Sean.
It is certainly quite unfortunate that you had contracted herpes type 2 in this unprotected sexual encounter. The negative test that you had at 8 weeks is certainly highly reassuring and a very good indication as it is possible to detect the HIV antibodies already at that stage. However current UK guidelines still recommend to have a final test at 12 weeks for it to be considered final and fully conclusive. Having said all that, and speaking out of my own clinical experience, I have never come across anyone testing negative at 8 weeks and then positive at 12 weeks. Therefore I am very confident that you are HIV negative.
UK Fourth Generation Testing
The need for a repeat HIV test if still within the window period after a specific exposure should be discussed. Although fourth generation tests shorten the time from exposure to seroconversion a repeat test at three months is still recommended to definitively exclude HIV infection.