Anonymous
I had unprotected sex with a girl, I did 4 tests and all of them were negative:
1. Antibody after 3 days (I know its too early for this test) - negative
2. PCR Quantitive after 15 days - not detected
3. Combo ag / ab after 27 days - negative 0.599<1.0
4. Combo ag / ab after 44 days - negative 0.625<1.0
do you think that I have to test again after 12 weeks? do you know any false negative case after 44 days?
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Anonymous
Hi there,

Thanks for contacting the AIDS Vancouver Helpline for your HIV Related question.

I understand you're worried about the accuracy of the tests you took. Hopefully this information will be able to help you.

The most recent test you took, the combo ag/ab 4th generation test, is considered by most HIV Specialists to be conclusive to a 99.9% accuracy after 4-6 weeks. However, we still go by the BC CDC guidelines which recommends that 12 weeks is the safest measure. Even though it's the safest measure, the other tests you've received are a strong indication of your status, but if you want to be certain, retesting at 12 weeks is recommended by the BC CDC. Additionally though, the test looks for two different components which also makes it a strong indicator of your status.

For more information, check out the BC CDC HIV Testing Guidelines [here](http://www.bccdc.ca/NR/rdonlyres/B35EDEBD-98CA-48BB-AB7C-B18A357AC19D/0/HIV_GUIDE_051114.pdf).

Hope we were able to answer your questions!

Sincerely,

Christina

AID Vancouver Helpline/Online

Monday-Friday 10am-4pm (PST)

603 253 0566 Ext. 299

Private and Confidential
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