Hiv Test First Generation

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HIV Testing

What Is HIV Testing? HIV testing tells you if you are infected with the Human Immunodeficiency Virus (HIV) which causes AIDS. Most of these tests look for "antibodies to HIV. Antibodies are proteins produced by the immune system to fight a specific germ. Other types of HIV test look for signs that the virus itself is in the blood. When people already know they are infected with HIV they might get other "HIV" tests. These measure how quickly...

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4th generation HIV Test / sex worker

HelloI am a male, mid 30s. I had around 15 minutes of unprotected vaginal intercourse with a sex worker from Thailand. Two days later she agreed to take a 4th generation HIV test. She tested negative both on the rapid antibody test and on the the...

Response from Shannon Southall

Rocky Mountain CARES

HiI'm glad to hear that the sex worker had testing and it all came back negative, but have you had testing?You could have developed a cold or viral infection and hence your symptoms.But again, I ask have you been tested. Just because the sex... Read more »

3rd and 4th generation test

You previously mentioned that the different generations of hiv tests differ in types of hiv-1 they detect.Can 3rd or 4th gen. test pick up all the strains we know about(A-h,and O )? What strains would a first generation test detect? Would it matter...

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

Stanford University, School of Medicine

The generational definition is partially historic. Most testing laboratories are using current generation antibody assays. Some viral load assays have difficulty with some subtypes of HIV-1. But again, these are not approved for diagnosis.MH... Read more »

First Generation Elisa Sensitivity

Hi, Dr Bob. I love reading your responses and I adore your upbeat attitude.My first husband was diagnosed with Aids in 1986. I was tested three and 1/2 months past last possible exposure and was negative (elisa). I didnt retest even though I was...

Response from Robert J. Frascino, M.D.

The Robert James Frascino AIDS Foundation

Hi,1. The first generation ELISA tests were quite accurate. However, the generation of the test has nothing to do with the recommendation to test out to six months following a significant HIV exposure. (That recommendation is the same no matter what... Read more »

Test generation help (from Obamacan)

Hi Dr. Bob, You and I agree on politics, but you know more than I about HIV. So, I need your help. I was tested at Labcorp (it says HIV 1/O/2) using what they describe as this: This test uses recombinant antigen sources and detects antibodies by...

Response from Robert J. Frascino, M.D.

The Robert James Frascino AIDS Foundation

Hi Obamacan-man,"Generations" of tests refer primarily to ELISA tests (enzyme linked immunosorbent assays). Your ICMA (immunochemiluminometric assay) uses a slightly different methodology, but is also extremely accurate and reliable. The... Read more »

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4th Generation HIV Test

Posted by Trophy

An arsenal of laboratory methods are available to screen blood, diagnose infection, and monitor disease progression in individuals infected by HIV. These tests can be classified into those that: (a) detect antibody, (b) identify antigen, (c) detect... Read more »

Home Access Test- What is a First Generation Test

Posted by Anonymous, 1 Reply

I have taken the Home Access test which I have learned is a First Generation Test. I was negative at 35 days which made me happy. I know the window for the most modern ELISA tests is 25 days on Average. I also know that the Home Access uses a 1st... Read more »

4 th Generation Test

Posted by Anonymous, 1 Reply

Regarding this 4 th Test for HIV. This test looks for Antigen and Antibodys. The Antigen is only present the first weeks than the test will be positive for Antibodys. This test is only good in diagnosing HIV at a early stage but the antigens is only... Read more »

Regarding First vs. Third Generation

Posted by notanonymous, 1 Reply

this was taken from one of the articles posted earlier and addresses the issue that was brought up on the Hotline thread about 1st generation prolonging window to 6 months.

"When whole-viruslysate enzyme immunosorbent assays (EIAs) were used to... Read more »

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