Anonymous
I got tested for HIVat exactly 6 weeks and again at 9 weeks. After my 9 weeks test I got extremely sick every acute symptom possible. I got tested with a fourth generation test at those times btw. I then thought I might have syphilis I was wondering if I had syphilis would my window period for my HIV tests be delayed ? Does a new syphilis infection affect my HIV tests?
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Anonymous
Hi there, Thanks for contacting the AIDS Vancouver helpline with your HIV related questions and concerns. We are happy to help!

There are only 4 things that affect the window period of HIV tests:

1) If you're on antiviral treatment for Hepatitis C

2) If you're being treated for cancer (Chemotherapy)

3) If you're on PEP/PREP Treatment for HIV

4) if you have an immunodeficiency disease (you would know as they are diagnosed during infancy)

So syphilis cannot affect your window period!
In terms of the 4th gen test, most HIV specialists consider this test to be conclusive at 6 weeks. The BC CDC still says 12 weeks, mostly because the 4th gen test isn't available everywhere yet, but regardless, your test results are highly indicative of your status and unlikely to change, but if you're really worried, you can retest again at 12 weeks.

Regarding the syphilis, contact your health care provider as they will be able to test you for that and give a dose of antibiotics which would clear that right up.

Check out the BC CDC HIV testing guidelines [HERE](http://www.bccdc.ca/NR/rdonlyres/B35EDEBD-98CA-48BB-AB7C-B18A357AC19D/0/BCHIVTestingGuidelinesMay2015.pdf)
and [Smartsexresource.com](smartsexresource.com) for more information about Safe sex and STIs

Hopefully this helped!

Sincerely,
Christina

AIDS Vancouver helpline/online

Monday-Friday 10am-4pm PST

604 253 0566 Ext 299

Private and confidential

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