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Is Dna By Pcr Accurate After One Week Hiv

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The Well Project

Women and HIV Viral Load

...weakening your immune system. Viral load is the amount of HIV in your bloodstream. The higher the amount of HIV, the greater the risk of your immune system being damaged. Viral load can be measured by two different lab tests: a polymerase chain reaction (PCR) test or a branched DNA (bDNA) test. Both tests are accurate, but each has a different way to measure the amount of virus. It is best to stick with the same kind of test and not...
Ask the Experts

HIV-1 DNA by PCR test and HIV-1 Abs test

Hi, I took the tests above on the 36th day after exposure. Both tests came negative, (I'm not in any med, never tested positive)However, I'm wondering how accurate these results are? Should I repeat the tests, when? What was the posibility of...
Joseph McGowan, M.D., F.A.C.P.

Response from Joseph McGowan, M.D., F.A.C.P.

North Shore University Hospital
...Shortly after an exposure the HIV ab test may not have time to turn positive. Usually the earliest would be by 2 weeks and most will be positive by 6 weeks. We repeat the testing for 3 months to be sure to catch all positives.The HIV PCR test Read more »

HIV PCR 2 weeks after exposure?

Dear Dr. Holodniy,Thank you very much for your service in this forum!My question is: Can HIV PCR detect the HIV after 2 weeks exposure to HIV? Is there any "window period" for this method? What is the best time for taking HIV PCR? I am really want...
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
...Two weeks could very well be too early and generate a false negative test in someone who is infected. There is not alot of good serial Read more »

PCR Question

Mr. Kull:The CDC states that this test can pick up the HIV virus in someone only recently infected. My question is how accurate is the test say at 16 weeks, and what does the test look for, that the antibody test does not?
Ryan M. Kull, C.S.W

Response from Ryan M. Kull, C.S.W

Columbia University's Health & Related Services
...RNA or DNA detected) at 16 weeks most likely means that you are not infected, but an antibody test result is preferable.PCR (polymerase chain reaction) tests are used to detect the presence of HIV-RNA or DNA in a person's blood. Essentially, the... Read more »

RNA PCR vs DNA PCR?

DR:What is the difference between the two? Which one is more accurate in making sure if one has HIV or not? I tested negative at 16 weeks, which one should I use to confirm??Thank you
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
...measures the HIV that is inside cells. If infection were present, both would be positive within several days to a couple of weeks after exposure. I am not sure why you would need to confirm with one of these tests. A repeat antibody in a few... Read more »
Articles
New York State Department of Health AIDS Institute

Diagnostic, Monitoring and Resistance Laboratory Tests for HIV

...Assays 2. HIV-1 Confirmatory Antibody Assays 3. HIV-2 Antibody Screening B. Viral Identification Assays 1. DNA Polymerase Chain Reaction (DNA-PCR) 2. Plasma HIV RNA Assays III. Monitoring Tests A. Lymphocyte Analysis ... Read more »
San Francisco AIDS Foundation

Viral Load Testing

...the branched-chain DNA test ( bDNA ), is made by a company called Chiron (pronounced "KAI-ron"). The reverse transcriptase polymerase chain reaction or RT-PCR (commonly called the PCR ) test is made by Roche (pronounced "RO-sh").... Read more »
The Well Project

Understanding HIV-Related Lab Tests II: Viral Load, Resistance and Tropism

...Viral Load Test Viral load is the amount of HIV in your bloodstream. Viral loadcan be measured by two different lab tests: polymerase chain reaction (PCR) orbranched DNA (bDNA). It is best to stick with the same kind of test and notswitch... Read more »
AIDS InfoNet

Viral Load Tests

...suggest measuring baseline (pre-treatment) viral load. A drug is "working" if it lowers viral load by at least 90% within 8 weeks. The viral load should continue to drop to less than 50 copies within 6 months. The viral load should be measured... Read more »
Connect With Others

Undetected HIV-1 RNA,PCR at 17 weeks

Posted by roma2010, 2 Replies
...hiya all i have the results of my 17 close to 18 weeks results of a PCR RNA for HIV-1 and it was undetected testing was done by COBAS AmpliPrep (Roche Molecular systems) qualification Read more »

PCR vs PRO DNA?

Posted by bura, 2 Replies
...symptom of HIV? my palms are also sweating. What are the chances of me becoming a late seroconverter. I took the PCR test one week after my elisa test is negative. Do u guys think that after a space of 1 week, things could change just like... Read more »

PCR Test Question

Posted by Anonymous, 2 Replies
...What exactly is PCR test and where can I get it done? Can it be done annonymously? How reliable is this test? I had heard that it produces a lot Read more »

HIV?

Posted by Anonymous
...http://www.acponline.org/journals/annals/15apr98/biohiv.htm. ?We observed that clade A strains [of HIV] were not detected by RT-PCR [Reverse Transcriptase-Polymerase Chain Reaction] and that clade G-strains were not detected by NASBA [Nucleic... Read more »