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HIV retest necessity?

Question: 

Hi,

I had exposure (mutual masturbation and titsex) with a sex worker two years ago. No oral, vaginal or anal sex took place. Oil was used on my penis and her breasts for lubricating. Half a year later I received a HIV screening (4th gen) along with my physical, which came back non-reactive. Should I retest due to possibility of false negative?

Answer: 

Hello,

Thank you for your inquiry. From what we gather from the question, you were asking about the necessity to be retested for HIV due to the possibility of a false negative. From the information given, you received a 4th Generation test 6 months after a possible exposure. A 4th Generation test at 6 weeks is considered to be conclusive and 99.9% accurate. If the 4th generation test is negative, the person is considered to be HIV-uninfected and no further testing needs to be done. [1]

Recommendation: From the information given, this scenario is determined to be no risk.

Regards, AIDS Vancouver Helpline/Online, Ashley

Reference:

  1. Bartlett J, Sax P. Screening and diagnostic testing for HIV infection [Internet]. Uptodate.com. 2018 [cited August 15 2018]. Available from: https://www.uptodate.com/contents/screening-and-diagnostic-testing-for-hiv-infection?search=HIV%20test&source=search_result&selectedTitle=1~150&usage_type=default&display_rank=1#H3828426