Determine Hiv Sensitivity

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HIV Resistance Testing

What Is Resistance? HIV is "resistant" to a drug if it keeps multiplying rapidly while you are taking the drug. Changes (mutations) in the virus cause resistance. HIV mutates almost every time a new copy is made. Not every mutation causes resistance. The "wild type" virus is the most common form of HIV. Anything different from the wild type is considered a mutation. An antiretroviral drug (ARV) won't control a virus that is resistant to it....

Ask the Experts

test sensitivity for HIV1 subtypes

Dear Ryan,Please let me begin by thanking you for this generous and invaluable service. I am a 26 yr old heterosexual male living in the UK. At the end of July 1999 I had an encounter with a woman in thatiland that involved brief exposure of my...

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

Columbia University's Health & Related Services

It is unlikely that your antibody tests were falsely negative. Antibody tests are fine tuned to detect virtually all subtypes of HIV-1. Nevertheless, since a small possibility of an antibody test not detecting a subtype of HIV-1 exists, it is... Read more »

sensitivity of the HIV virus

Is there any temperature at which the aids virus will die if exposed? If so, is there a difference if the virus is isolated as opposed to in blood, tissue, etc.?How does pH affect the virus? Would metabolic acidosis or alkalosis kill the virus in a...

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

Stanford University, School of Medicine

HIV survives better in the cold than at elevated temps. Blood or fluid containing virus survives for days in the refrigerator. If it's a drop on a counter, once it's dry, its dead. The virus can survive indefinitely stored at - 80 C or in... Read more »

Using PCR test to determine your status

Can you take a PCR test to determine your HIV status? If so, how soon can you take the test if you think you might have been exposed to the virus? Finally, how reliable is the test?Thank you...

Response from Ewald Horwath, M.D.

University of Miami School of Medicine

The standard ELISA, with a confirmatory Western blot, is a highly sensitive and specific test. As you may be aware, following an exposure, the development of antibodies to HIV may take some time. The ELISA will turn positive as early as 3 weeks... Read more »

False Postitive (FALSE POSITIVE TESTS, SENSITIVITY VERSUS SPECIFICITY, 2010)

I was tested a few months ago for HIV and other STDS. Everything was great except for my HIV test came back positive with the Elisa tests and my western blot was a negative. I came in a month later and retook the test and my elisa then came back...

Response from Robert J. Frascino, M.D.

The Robert James Frascino AIDS Foundation

Hi,The assumption is completely accurate and correct. You can relax Max! Diagnostic HIV screening involves a two-part process. The first test (ELISA or rapid test) is extremely sensitive, so as not to miss any true HIV-positive cases. In fact,... Read more »

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oral-saliva test sensitivity

Posted by Anonymous, 1 Reply

Hi,

Would appreciate any help for this question/problem. Seven weeks ago I had my 1st and only bisexual experience with another man. I performed oral sex on him with no ejaculation in my mouth. Of course, now I am scared to death! I have been in... Read more »

what kinds of blood testing can determine HIV?

Posted by Anonymous, 1 Reply

What kinds of blood testing can determine HIV? i had a blood test rescently but i dont know what it is for yet. Im not sure if i have hiv or not and im just wondering if the blood test i had can determine if i have HIV eventhough i didnt get a... Read more »

The Abbott-Determine test

Posted by ubuntu, 1 Reply

Hi. I can't find information regarding the Abbott-Determine test. I got tested 1 month and result is negative. I got tested again today (2nd month), will get the results tomorrow. Questions: Is this a rapid test, much like the oral test? How... Read more »

DETERMINE ABBOT

Posted by Anonymous

hola the body soy mario nuevamente,
en argentina se esta haciendo hoy una cruzada por el dia inter. de la lucha contra el sida......pudiendose realizar analisis de hiv mediante el metodo rapido DETERMINE ABBOT, lamentablemente por mi lugar de... Read more »

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