|Questions about window period
Apr 22, 2013
Lisa: I had an exposure 5 months and a half ago. I took 4th generation tests at 6,12 and 22 weeks, all results negative and a viral load test by bDNA and a 3rd generation test at 15 weeks with undetectable viral load result and negative result the 3rd gen test. Do I need to retest at 6 months? Or are the results totally conclusive?
| Response from Dr. Hightow-Weidman
Hello there The sensitivity of HIV testing has improved greatly over the past few years. Current antibody tests can pick up HIV infection earlier than prior tests and by 90 days practically all (97%) infections are detected by antibody testing alone the remainder turn positive by 180 days. Therefore, a negative HIV antibody test after 90 days means that infection was highly unlikely and a test that is negative at 180 days or beyond is considered conclusive for the absence of HIV infection. Even newer HIV tests look for the virus itself. These include assays such as HIV RNA tests (viral load) and p24 antigen tests. These become detectable within days of infection. So, an undetectable HIV RNA or p24 antigen test accompanied by a negative HIV antibody test at 90 days or beyond can also be considered conclusive for the absence of HIV infection. Hope this helps. take care, LHW
Get Email Notifications When This Forum Updates or Subscribe With RSS
- How Likely Is It To Get HIV From Giving Oral Sex?
- How Likely Is It To Get HIV From Topping?
- How Long Do I Wait To Get Tested After Oral Sex On A Woman?
- Insertive Anal Sex With Condom Do I Need To Get Tested For AIDS
- Kissing Cold Sore How Long Does It Take To Test Positive For HIV
- Licking Anus Risks
This forum is designed for educational purposes only, and experts are not rendering medical, mental health, legal or other professional advice or services. If you have or suspect you may have a medical, mental health, legal or other problem that requires advice, consult your own caregiver, attorney or other qualified professional.
Experts appearing on this page are independent and are solely responsible for editing and fact-checking their material. Neither TheBody.com nor any advertiser is the publisher or speaker of posted visitors' questions or the experts' material.