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Doctor insights on: Hiv 1 2 Elisa

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Dr. Krishna Kumar
16 Doctors shared insights

Hiv (Definition)

Hiv infection is caused by a retrovirus....This retrovirus binds to CD4 cells (for the most part). You may detect the virus by several different methods. An elisa test (enzyme linked immunosorbent assay). You may also detect it by doing a test referred to as a western blot (a gel protein electrophoresis). Thirdly by pcr (polymerase chain reaction) which ...Read more


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Is 5 months hiv 1+ 2 Elisa blood test accurate?

Is 5 months hiv 1+ 2 Elisa blood test accurate?

Yes: ! 00% conclusive. Officially conclusive at 3 months or more according to test manufacturers, but 6-8 weeks is conclusive for practical purposes. ...Read more

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I tested for hiv 1&2 Ac./Ag. P24 Elisa 6 mnths ago it was negative for 0.28. I tested today negative 0.74 am I risky? Y it increased? Is it negative?

I tested for hiv 1&2 Ac./Ag. P24 Elisa 6 mnths ago it was negative for 0.28. I tested today negative 0.74 am I risky? Y it increased? Is it negative?

Definitely negative: There is no meaning to changing numbers on HIV testing, as long as the number is below the cut-off for a positive result. Even the same blood specimen tested 10 times will give 10 different numbers, up or down. Your results are definitely negative. No additional testing is needed unless or until you might be reexposed to HIV. ...Read more

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Is HIV 1/2 antibody combo (cmia) test as accurate as ELISA test? Also if the combo test at 75 & repeated at 100 days concl. If they are non reactive?

Is HIV 1/2 antibody combo (cmia) test as accurate as ELISA test? Also if the combo test at 75 & repeated at 100 days concl. If they are non reactive?

HIV testing: Yes the combination of testing for p24 antigen and antibodies to HIV 1 ; 2 is quite accurate, even if done using techniques other than elisa. The negative results at >3 mos after exposure make it almost certain that you are not infected with this virus, although there have been very rare cases in which antibodies were not detected until 6 to 12 mos later. You are probably fine. ...Read more

Dr. Tony Ho Dr. Ho
1 doctor agreed:
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What is the difference between ELISA test and elfa test for HIV testing. I had a risky adventure and tested negative for HIV 1 and 2 as per elfa test?

Dr. Tony Ho Dr. Ho
1 doctor agreed:

Shorter detection: Elfa is the new version of the elisa test; it has about a 5 day shorter detection time, being 95% sensitive at 28 days. ...Read more

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Is ELISA test for HIV 1 & 2 antibodies conclusive after 8-9 weeks of exposure? Does NON-REACTIVE mean NEGATIVE?

ELISA for HIV: The ELISA test is not conclusive after any amount of time. The ELISA is a screening test and if it comes back positive, a Western blot will need to be done. Non-reactive is a good thing to be and it does mean that you are negative for HIV virus. Although there is a window period when you can have the HIV virus but still have a nonreactive result. Another test may be needed in that case. Suerte ...Read more

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I did duo test hiv 1, 2, 3 and 7 monthes postrxposure. I did elisa 9 and 16 months all negative. At 14 monthes I got perianal fungal infection. Is tht hiv?

I did duo test hiv 1, 2, 3 and 7 monthes postrxposure. I did elisa 9 and 16 months all negative. At 14 monthes I got perianal fungal infection. Is tht hiv?

Stop worrying: Fungus on your hind end is not AIDS and you owe it to yourself to stop triubling yourself with concerns like this. You need to be thankful for good health. You would probably find it helpful to get with a group of folks who do fitness training together. These unwanted fears about health may vanish when you refocus on high level wellness ...Read more

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Is hiv 1 rna pcr qualitative and elisa 3rd gen test reliable after 4.5 months of exposure. Both came not detected?

100% reliable: Either of these tests, by itself, proves 100% you don't have HIV. There is no chance you are infected. Stop testing and stop worrying about HIV, no matter what exposure or symptoms you may have. ...Read more

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Prolonged fever (>7w)+swollen painful lymph nodes (neck and behind the ears)+headache. Tested -ve for HIV (ELISA 1&2), Hep-B&C, VDRL what else could it be?

Prolonged fever (>7w)+swollen painful lymph nodes (neck and behind the ears)+headache. Tested -ve for HIV (ELISA 1&2), Hep-B&C, VDRL what else could it be?

Many causes: There are many causes for swollen lymph nodes and fever. Remember there is a window period for HIV testing - about 3 months and hepatitis up to 12 weeks! Other causes could be infectious mononucleosis, fungal infections, TB, even cancer. You need close follow up with your doctor for more testing. Good luck ...Read more

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Could one infected with both hiv-1 and hiv-2 at a time?

Could one infected with both hiv-1 and hiv-2 at a time?

Yes: Infection with either hiv-1 or hiv-2 is not protective against a superimposed infection by the other virus. So in theory, yes, one could get both in one individual. Hiv-2 is fairly uncommon in the us so infection with it is unlikely. ...Read more

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I had a oraquick HIV 1/2 oral test done two days ago. The results were negative. How accurate are those results? Last exposure four years ago.

I had a oraquick HIV 1/2 oral test done two days ago. The results were negative. How accurate are those results? Last exposure four years ago.

Pretty accurate: According to cdc site, "in the clinical studies by the manufacturer, the oraquick oral fluid test correctly identified 99.3% of people who were infected with HIV (sensitivity) and 99.8 % of people who were not infected with HIV (specificity)." of course, if you have symptoms of viral illness or characteristic opportunistic infections, get the standard blood test for confirmation or denial. ...Read more

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Is a HIV blood test hiv-1/0/2 antibioties test conclusive after 4th months past exposure? It came out negative also took two oraquixk at home negativ

Is a HIV blood test hiv-1/0/2 antibioties test conclusive after 4th months past exposure? It came out negative also took two oraquixk at home negativ

No: It is recommended that you test also at 24weeks which would be 6months. Rarely does the test become positive after this but on a few occasions seroconversion had taken up to a year to occur. Get a counselor knowledgeable about the disease to talk to. This will help your anxiety level and use adequate protection in future ...Read more

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I'm concern I had labs drawn and one of the test hiv-1 antibody value <1.00 and range <1.00 but the result says "negative". What doea this mean?

Negative: You have a negative HIV test. "<" means "less than." the "range" means the result you would expect in someone without HIV infection (less than 1.00), which is also your result. That's why your test is negative. ...Read more

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What is HIV 1 and how does one get it?

It is HIV: Hiv is human immunodeficiency virus--type 1 or 2...Does not matter which type...It is transmitted via sexual/vaginal/anal intercourses, needle sticks/sharing, and mom-child transmission during pregnancy/birth (vertical transmission)...Kissing and simple touching does not transmit the disease... ...Read more

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How long does one have to wait, for hiv-1 DNA PCR results?

How long does one have to wait, for hiv-1 DNA PCR results?

Just few days: Depends how fast the genetic lab receives the specimen, HIV virus dna analysed and identfied by pollymer chain reaction, or PCR making copies of sequence and identifies. ...Read more

Dr. Ed Friedlander
1,495 Doctors shared insights

Human Immunodeficiency Virus (Definition)

Human immunodeficiency virus (HIV) is a lentivirus (a member of the retrovirus family) that causes acquired immunodeficiency syndrome (aids), [1][2] a condition in humans in which progressive failure of the immune system allows life-threatening opportunistic infections ...Read more


Elisa (Definition)

Enzyme-linked immunosorbent assay (elisa) is a test that uses antibodies and color change ...Read more