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What Does An Oral Assay Test For

Here's a taste of what has to offer on this topic:
U.S. Food and Drug Administration

Donor Screening Assays for Infectious Agents and HIV Diagnostic Assays

Antibody to Hepatitis B Surface Antigen (HBsAg Assay) Tradename(s) Format Sample Use Manufacturer Approval Date Auszyme Monoclonal EIA Serum / Plasma / Cadaveric Serum Donor Screen & Conf. Kit Abbott Laboratories... Read more »
U.S. Food and Drug Administration

Three New Assays Approved

On May 23, 2007, FDA approved the Procleix Ultrio Assay on the fully automated Procleix TIGRIS system manufactured by Gen-Probe Inc., of San Diego, California, and marketed by Chiron Corporation. This is a fully automated qualitative in vitro... Read more »

Can a Trofile Assay Be Used to Predict HIV Disease Progression?

There's nothing like hearing the results of studies directly from those who actually conducted the research. In this interview, you'll meet one of these impressive HIV researchers and read her explanation of a study she presented at the 49th... Read more »
Ask the Experts

HIV RNA Assay and PEP

Doctor Bob,About two weeks ago I went to a Bangkok Hospital to start PEP from what I thought was a high risk exposure to a female sex worker here in Thailand. It was protected vaginal intercourse (with exposure to blood) and unprotected oral. Under...
Robert J. Frascino, M.D.

Response from Robert J. Frascino, M.D.

The Robert James Frascino AIDS Foundation
Hello,Yes, I absolutely agree: PEP is not warranted. (See below.)PCR technology has much more difficulty with false-positives than with false-negatives; however, please note PCR is not recommended for routine HIV screening for a variety of... Read more »

Abbott Architect Combo Assay question Dr. Wohl

Doctor, almost five months ago i had a low risk exposure involving deep kissing and more or less 15 seconds of protected oral sex with an exotic dancer. She also rubbed my dick protected in her vagina once before oral sex took place. She provided...
David Wohl, M.D.

Response from David Wohl, M.D.

University of North Carolina - Chapel Hill
My answers are:So, my questions are:1- Are my negative results for Hep B and C conclusive? Yes2- Is it possible to test negative at 12 weeks for HBsAg and still be infected with hep B? No. Are you sure you are not already immune?3- Do i have to... Read more »

What is the deal with the VIRCO Assay(s)

I read that a group in Belgium, VIRCO, is developing something called the RT-antivirogram which provides phenotypic resistance testing of the nucleosideanalogue drugs and the non-nucleoside reverse transcriptase inhibitors. Is it only for nukes and...
Mark Holodniy, M.D., F.A.C.P., C.I.C.

Response from Mark Holodniy, M.D., F.A.C.P., C.I.C.

Stanford University, School of Medicine
The VIRCO antivirogram is an assay which takes the reverse transcriptase and protease enzymes from a patient's strain of HIV, and inserts them into the backbone of lab adapted strain of HIV. Initially used to look at the RT inhibitors, the... Read more »


Dear Dr. Bob,I thank you kindly and sincerely for your efforts, support and the invaluable knowledge you provide to the questioners on this forum. I have been reading this website extensively (over a month now) since my potential exposure date, and...
Robert J. Frascino, M.D.

Response from Robert J. Frascino, M.D.

The Robert James Frascino AIDS Foundation
Hi Aptimistaken,Thanks for your kind comments! You are correct: the Aptima HIV-1 RNA Qualitative Assay is the only RNA PCR test approved by the FDA for HIV-diagnostic screening. You are also correct: the biggest problem with PCR assays is... Read more »
Connect With Others

antigen sandwich assays

Posted by Anonymous
Is this antigen sandwich assays part of the regular 3rd generation elisa test ?

could someone please explain the meaning of this ?
I know it sounds funny but I read that this test will pick up antibodies in 4 weeks.

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Abbott ARCHITECT HIV Ag/Ab Combo assay Accuracy

Posted by pupiz, 1 Reply
Hi, all. I had an exposure June 25 and ran across this particular 4th generation test that was approved by the FDA in 2010. I am not sure about the accuracy of it. I took an HIV test at 19 days and it was negative. I know that it is not conclusive,... Read more »

Antigen methods of various assays.

Posted by Anonymous Read more »

Testing At 12 Weeks

Posted by Anonymous, 1 Reply
I am wondering about the accuracy of the Elisa test at 12 weeks. I had oral sex with another male (both giving and receiving). He did not ejaculate in my mouth, but I'm not sure if there was any pre-cum. I do not recall having any symptoms 2-4... Read more »