The Body: The Complete HIV/AIDS Resource
Follow Us Follow Us on Facebook Follow Us on Twitter Download Our App
Professionals >> Visit The Body PROThe Body en Espanol

RNA Undetectable Absence Of Antibodies

Here's a taste of what has to offer on this topic:
Ask the Experts

Undetectable RNA PCR

Hello doctor. Can you tell me if it would be possible to have an undetectable viral load (RNA PCR <400 copies)3 months after possible exposure, if one had experienced ARS within days of exposure, but has still notseroconverted? In other words,...
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
It's possible. The natural history after ARS is still evolving. HIV infection is controlled by both cellular immunity (primarily CD4, CD8, dendritic, and macrophage cells) and B cells which produce antibodies. Some people have more efficient... Read more »

HIV-1 RNA Undetectable?

I recently took an RNA by PCR and the result came back as less than 50 copies/ml were detected... Read more »

PCR RNA / Antibodies

Hi doc.Have read that a person can have PCR RNA test result < 50 copies / ml. and still be HIV... Read more »
Henry J. Kaiser Family Foundation

RNA Test to Detect HIV During Acute, Primary Phase Not Widely Used, New York Times Reports

The New York Times on Friday examined an HIV blood test, which seeks out bits of the virus' RNA and can identify infections during the acute or primary phase. Standard rapid tests, which detect HIV antibodies, can provide immediate results but... Read more »
Treatment Action Group

Study of HIV Superinfection and Neutralizing Antibody Responses Causes Confusion

On March 29 th , PLoS Pathogens published a paper reporting that women superinfected with two HIV variants are more likely to generate antibody responses capable of neutralizing a broad array of viral strains (known as broadly neutralizing... Read more »
Johns Hopkins AIDS Service

FDA Review of Viral RNA Testing

Shortly after the approval of the three protease inhibitors, the FDA reviewed the diagnostic assays that quantitate HIV RNA.These tests are being used by many clinicians to monitor viral loads in their patients and to assess their response to... Read more »
The Center for AIDS

HIV Can Be Found in Semen Even When Viral Load Is Undetectable in Blood

HIV can be detected in semen of men who have an undetectable viral load in blood, according to results of a 304-man study. 1 This finding underlines the importance of using condoms when having sex, even if a man is taking antiretroviral therapy... 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 range of this assay is 48 to 10,000.000 copies i also went to a... Read more »

RNA PCR test

Posted by Anonymous, 2 Replies
Can anybody tell me if a RNA PCR qualitative test is reliable ? - I got a negative EIS test at 7 week but my doctor told me that antibodies take time to show up, depending on many factors and that the RNA test is the only reliable one to check for... Read more »

To Zoom42 RNA vs DNA

Posted by Anonymous, 2 Replies
Hi Zoom,

Before I begin, please understand I'm not a doctor or scientist. I'm someone who unfortunately has an
OCD issue with an exposure I had. The good thing about it is, I've spent a lot of time researching
every aspect of testing, from phone... Read more »


Posted by Anonymous, 1 Reply
Had negative antibody testing after 6 month period(no further exposures) strange symptoms with tongue(white crap on tongue and taste buds seem to be larger than normal at back of tongue)Could a person still have hiv in their system but for some... Read more »