Anonymous
I took a 4th Generation HIV Antibody/Antigen test and a PCR (viral load) test, Over one year after a possible exposure. Both came back Negative, is this conclusive? I've heard the possiblitly of it taking over one year (sometimes greater), have you heard anything similar? I'm just trying to make sure Im not a rare case. Thank you very much, im located in the U.S., but believe we have similar tests.
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Anonymous
Hello and thank you for contacting the AIDS Vancouver Helpline. I am happy to answer your questions.

Yes, your test results are conclusive as long as you haven't had a more recent exposure. The 4th generation test is considered conclusive by most specialists at 6 weeks, and is very accurate even earlier than this. The PCR test is also accurate within 3 weeks of exposure. However, by BC CDC standards, all HIV tests are considered conclusive after 12 weeks post exposure.

In terms of your question about you being a rare case, this does not seem likely. The most I've heard about in terms of other window periods is at 6 months from places like India. Since you are from the USA, it is likely that you will follow our standards here in BC more closely.

I hope I have answered your questions! If you have any more, please feel free to write back, call us at the Helpline, or visit our website http://www.aidsvancouver.org.

Sincerely,

Caroline

Helpline Volunteer

AIDS Vancouver Helpline

604-253-0566

Monday-Friday 10am-4pm

*Private and Confidential*
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