Anonymous
Hi,
I am planning to perform HIV screening after potential incident(oral sex) at 5 weeks.
I am planning to perform antigen (ICMA,Western-blot) test however if i am in window period this test may come negative so in addition to this test i am also planning to perform either HIV Pooled Nucleic Acid Test or RNA Quantitative, Real-time PCR.
Please advice which test should i take in addition to antigen test for near conclusive results. Please let me know difference between these two Pooled NAAT vs RNA Real-Time PCR test.
I have psoriasis which being auto-immune disorder, can it affect any of the test results?
Thank you.
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Anonymous
Hello and thank you for using AIDS Vancouver as your source of HIV/AIDS related information.
It is great to hear that you are planning on getting tested. Giving oral sex is considered a low risk activity for HIV transmission, and receiving oral sex is considered negligible risk (which means that although an exchange of fluids is involved, there has never been a confirmed report of transmission this way).
The ICMA test is a standard antibody test with a window period of 4 weeks to 3 months, with 95% of infections detectable within 4-6 weeks. Therefore, testing at the 5 week mark will give you a good indicator of your status, but for completely conclusive results, it is recommended that you test at 3 months.
The Western Blot test is usually only used for confirmatory testing (if someone initially tests positive, it is used to confirm or negate the presence of an HIV infection). This test is 99.9% accurate after 4-6 weeks however, follow-up HIV testing at 12 weeks is always recommended.
The Pooled NAAT test is also called the "Early Test" which detects viral RNA in the blood of individuals who do not have detectable antibodies yet. The window period is 10-12 days post exposure (with 90% accuracy at 10-12 days, 95-98% at 6-8 weeks and 99% at 12 weeks).
The RNA PCR test detects the genetic material of HIV itself, and has a window period of 2-3 weeks post exposure.
Both HIV tests are extremely accurate, however, it is still recommended that you re-test at 3 months (12 weeks) in order to have completely conclusive results. Having psoriasis will not affect your test results in any way.
Hopefully this answers your question and if you have any other questions or concerns, please feel free to call or email us.
Take care,
Stephanie
AIDS Vancouver Helpline Volunteer
E-mail: helpline@aidsvancouver.org
Phone (Mon-Fri 9-4pm): (604) 696-4666
Web: http://www.aidsvancouver.org/helpline
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