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Doctor insights on: Antibody For Hiv

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Could they always look for antibodies in HIV blood tests?

Could they always look for antibodies in HIV blood tests?

Yes: However, you have to agree to be tested for antibodies to hiv. Hiv test only tests for antibodies to HIV nor other antibodies. ...Read more

Dr. Lynne Weixel
9 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 it possible to have an HIV p24 antigen, HIV antibody, and HIV PCR accurate 5 weeks after exposure?

Is it possible to have an HIV p24 antigen, HIV antibody, and HIV PCR accurate 5 weeks after exposure?

Yes in part: The tests that detect actual HIV virus, such a the HIV viral load (pcr), will likely be positive 5 weeks after an exposure that results in transmission of hiv. The HIV antibody test may still be undetectable. So, if you are very worried about acute hiv, it is very important to discuss with your health provider so they do the right tests. ...Read more

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Do you have to become sick with the flu or a cold before antibodies for HIV are made? Even if it's at week 11 is week 12 still conclusive?

Nucleic acid test: You do not have to be sick with any thing to make antibodies to HIV, if you are infected with the virus. Occasionally it may take a person as long as a year to make antibody. At 11-12 weeks after exposure to HIV, nucleic acid test for HIV would be conclusive. At this time a negative HIV antibody does not rule out infection. ...Read more

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Do you have to get sick (flu or cold) before you develop antibodies for hiv? Or having symptoms or the lack of @3 mths or longer conclusive?(oraquick)

Do you have to get sick (flu or cold) before you develop antibodies for hiv? Or having symptoms or the lack of @3 mths or longer conclusive?(oraquick)

Not conclusive: I answered the same question earlier. Even at three months a negative oraquick test does not rule out HIV infection. Consult your doctor for an HIV nucleic acid test. ...Read more

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My rapid antibody HIV body came out negative after 1 month HIV exposure, what next?

My rapid antibody HIV body came out negative after 1 month HIV exposure, what next?

Repeat testing: We usually recommend a repeat test in 6 months after exposure. If you are continuing to participate in high risk behaviors like having unprotected sex, IV drug use/sharing needles, exchanging sex for drugs, having multiple sex partners...) the risk of acquiring the HIV continues and retesting routinely (every 3 to 6 months could be considered. As well you should discuss prep and pep w/your doc. ...Read more

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Can anything or any condition delay antibody development for HIV to longer than 15 months? I have tested five times at over 12 months.

Can anything or any condition delay antibody development for HIV to longer than 15 months? I have tested five times at over 12 months.

None: There are no medical conditions or medications that delay HIV antibody. And if you have had antigen testing (duo test), it further proves you didn't catch HIV. This is your 3rd or 4th question about this. Obviously you are obsessed and over-worried and having trouble accepting the evidence you don't have HIV. If you can't shake it, consider counseling. I suggest it from compassion, not criticism. ...Read more

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Hiv 1&2 and p24 combo test negative at week 8and anti body at week9 both negative but experience symptoms. I recieved an oral sex from a lady of unknown status. I tested at 2,3,4,5,6,7 weeks antibody HIV 1&2 non reactibe. At 8week hiv 1&2 p24 combo negat

Hiv 1&2 and p24 combo test negative at week 8and anti body at week9  both negative but experience symptoms. I recieved an oral sex from a lady of unknown status. I tested at 2,3,4,5,6,7 weeks antibody HIV 1&2 non reactibe. At 8week hiv 1&2 p24 combo negat

You can stop this: Please forgive my frankness. Getting oral sex is extremely low risk. Yet you're going back every week for tests. Why this fear, little brother? Move on with your life. Love safely from now on. Have you talked with Dad about romantic love? Talk with your physician if your fears of HIV are disabling you. And find the real cause of your physical symptoms -- I'll bet it's simply worry. ...Read more

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Hi, antibody HIV test detects HIV 2 as well as HIV 1 at three months after a possible risk?

Hi, antibody HIV test detects HIV 2 as well as HIV 1 at three months after a possible risk?

HIV 2: If the test was designed to test for both type one and type two then you are 95% clear. If the test did not test for type two then you need that test. ...Read more

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The clinic performed an antibody HIV test and it tested reactive. Does this mean I have HIV?

The clinic performed an antibody HIV test and it tested reactive. Does this mean I have HIV?

Need confirmation: When a screening test is positive, it needs to be confirmed with a second test. Sometimes, the screening test will be positive and the confirmatory test negative. If the confirmatory test is positive, then you are considered to be HIV positive. ...Read more

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How accurate is antibody test for HIV at 50 days? And how accurate is 4th generation test at 43 days?

HIV: These tests are highly reliable. If you remain uncertain and are obsessing over this you can have a pcr for HIV RNA performed and if negative you are definitively free of disease. ...Read more

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Why isn't a urine HIV test as effective as a blood HIV test? Would urine still pick up antibodies and detect hiv?

Smile & be brave: Hiv does its work in the blood, not the bladder, and antibodies don't naturally go to urine. If you are afraid of the needlestick, you aren't alone. It may help you to think about how the people who love you will want only the most accurate answer for your assurance. Your physician can help, or a visit with a holistic practitioner can help you overcome this and many other fears. Best wishes. ...Read more

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What is the accuracy of p24 antigen and antibody HIV testing 4-6 weeks post PEP testing? For something incredibly minor, would this be reliable?

HIV nucleic acid: The antigen antibody combo tests are quite good. But you should repeat the test at three months. At three months, if you get a HIV nucleic acid test and that is negative, you will more sure of the result. ...Read more

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What's the difference between HIV antibodies test and HIV antigen test? Because I had negative HIV 1/2 antibodies so does that mean I need a retest?

Possibly re-test: Once an individual has been exposed to an HI virus and its several antigens that individual's body produces anti bodies. After exposure it takes around 2 months for the antibodies to appear. So if the exposure was within two months, the antibody test needs to be repeated. If the antibody test is positive, tests for antigens need to be done, to confirm that the antibody test is not falsely pos. ...Read more

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Simultaneous detection of p24 antigen and antibody HIV 1and 2 cmia = 4th generation ag ab combo? Which means u have been tested for p24 /antibody ?

Yes and no...: The antibody portion of the test detects antibody to several HIV antigens in addition to p24. Probably you do have antibody to p24, but the test doesn't distinguish these various types. And it doesn matter. If your test is negative and it has been 4 weeks or more after your last possible exposure to HIV, the result is conclusive. ...Read more

Dr. Thomas Namey
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


Dr. Hunter Handsfield
1,566 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