Advertisement

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
Read Now: Expert Opinions on HIV Cure Research

How Does An HIV Antigen Test Work?

Here's a taste of what TheBody.com has to offer on this topic:
Get the Facts
Project Inform

Blood Work: Two Common Tests to Use for Monitoring HIV Disease

Introduction CD4 Cell Count Tests Why Do You Use CD4 Counts? CD4 Counts and When to Start Therapy What Do CD4 Counts Mean? Viral Load Tests How Often Should Viral Loads Be Tested? What Tests Are Used? Getting Viral Load Tests Viral Load and Women Interpreting Test Results Disease Progression and Therapy Commentary Introduction Two of the most common tests that you and your doctor will use to monitor your health are...
Ask the Experts

Testing after PEP - Peculiar concerns (HEPATITIS C AND DELAYED HIV SEROCONVERSION, 2011) (APTIMA - HIV-1 RNA QUALITATIVE ASSAY, 2011) (p24 ANTIGEN TESTING, 2011)

Dear Doctor FauscinoWith my apologies if some of the questions below seem repetitive. I hope I do not upset you. There are some matters below that are somewhat distinct and I am hopeful you can add some additional clarity and/or confirmation to....
Robert J. Frascino, M.D.

Response from Robert J. Frascino, M.D.

The Robert James Frascino AIDS Foundation
Hello,No apology is necessary. I've answered so may questions in this forum over the years that greater than 99% of the questions I respond to on a daily basis I've already addressed (many multiple times). Responding to your specific... Read more »

Dou Hiv antibody/p24 antigen test

Dear Dr Bob,thank you for your selfless work.I had an unprotected sexual encounter with someone of unknown status 7 weeks ago.I am desperate for some peace of mind.I want to take the HIV antibody/p24 antigen Duo Test,next week and would desperately...
Robert J. Frascino, M.D.

Response from Robert J. Frascino, M.D.

The Robert James Frascino AIDS Foundation
Hi Tony,HIV-antibody tests taken prior to the three-month mark are not considered to be definitive or conclusive. You'll have to hold tight until then for a conclusive test result. I'll send my good-luck karma that your definitive... Read more »

P24 Antigen test

Hi doc, first of all Thanks for all the great work you do here. I took PCR RNA <192 cop/ml, HIV antibody test (both negative) after 46 days of possible low risk exposer. also P24 Antigen test, HIV antibody, Western Blot, HIV IFA tests...
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
Given the combination and timing, you are probably not infected. I think one more followup antibody test after 3 months would be helpful.MH... Read more »

Clarification on P24 Antigen test etc

Dear Mark, I have read with interest all the references to previous questions to your forum on the use of P24 testing, I must say I am a little confused regarding value of the timing.I understand that P24 test can pick up HIV earlier than antibody...
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
There is overlap in terms of the time between the disappearance of p24 antigen and the development of p24 antibody during acute infection. The overlap period is variable.... Read more »
Connect With Others

Accuracy of Anti-hiv 1&2 (recombinant antigen) blood test? Please help!

Posted by Burgundy11, 1 Reply
I did a Anti-hiv 1&2 (recombinant antigen) blood test 5months after my exposure. The result was negative. How accurate is the result?! Read more »

Where do you find antigen testing

Posted by Anonymous, 2 Replies
I have only heard of this testing here on the internet. Many people say they were tested using the fourth generation test. All of the clinics around here just use Oraquick or they will send your blood in if you want to wait a few weeks to get the... Read more »

p24 antigen test

Posted by Anonymous, 3 Replies
is it true the p24 antigen test is only accurate 2-4 weeks after infection ? Read more »

hiv antigen

Posted by Anonymous, 2 Replies
what is the chane of me taking 3 hiv antibody tests many yrs after exposure all neg the today i went for a hiv 2 and antigen test that these test would come back positive i have been hjaving some syptoms hiv related for 4 yrs but i tested neg on... Read more »