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Doctor insights on: Blood Test Hiv

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Positive HIV screener test at blood donation... Negative IFA and Negative NAT... False positive?

Positive HIV screener test at blood donation... Negative IFA and Negative NAT... False positive?

Yes: The initial screening test for HIV is very sensitive, but not very specific. The back up screening tests are much more specific for HIV. ...Read more

Dr. Michael Kleerekoper
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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Having HIV blood test and nervous!?

Having HIV blood test and nervous!?

Whatever you do,: Do not let the anxiety stop you from having the test! go with a friend, meditate, whatever it takes, but have the test! ...Read more

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What is the ssa/Ssb blot test antibody blood test?

What is the ssa/Ssb blot test antibody blood test?

A test: for a certain autoimmune condition. it's important to understand that these blood tests need to be interpreted carefully in the context of your symptoms and exam findings. a positive test doesn't necessarily mean you have the condition. ...Read more

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Can pregnancy blood test give false negative. 3 days late, urine test negative and blood test negative too?

Can pregnancy blood test give false negative. 3 days late, urine test negative and blood test negative too?

False negative PG: A false pregnancy test is possible however, in this case you also have a negative blood pregnancy test which is far more accurate. ...Read more

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Can you have a negative hep c antibody screen blood test but a positive viral load test?

Can you have a negative hep c antibody screen blood test but a positive viral load test?

Possible: It is possible, though not common, to have the results you described. It would be prudent to consult an infectious disease specialist as hepatitis C is now curable in most cases. ...Read more

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Negative herpes culture and blood tests; pretty accurate?

Negative herpes culture and blood tests; pretty accurate?

Likely OK.: I don't know what your history is but if you had/have a herpes infection, you likely would have noticed skin lesions that could be irritating at some point in time. Many times there can be no symptoms but if you have this there would be some kind of outbreak at some point in time. The tests include tzank prep. Of scrapings that show giant cells, cultures are pos. In 48-96 h, elisa+pcr are great. ...Read more

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Can negative test results be trusted for a prostitute with HIV antibody rapid test and HIV duo test?

Can negative test results be trusted for a prostitute with HIV antibody rapid test and HIV duo test?

Not necessarily: If the person just acquired the infection, she or he may be carrying the virus that will not be detected by either antibody or antigen tests. Testing for viral nucleic acid is the earliest way to detect HIV infection. ...Read more

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blood test IGG 17.95 positive and IGM 8.50 negative. stool test was negative. do I infect with h.pylori?

 blood test IGG 17.95 positive and IGM 8.50 negative. stool test was negative. do I infect with h.pylori?

Past infection: These results suggest past infection with H. pylori. The blood test can remain positive for years after past infection even if you were treated. The stool test and urea breath test can better detect current infection. The gold standard for testing is a biopsy during endoscopy. https://www.nlm.nih.gov/medlineplus/ency/article/007501.htm ...Read more

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Positive HSV culture but negative blood test; should tests be repeated?

Positive HSV culture but negative blood test; should tests be repeated?

Trust the culture: A positive herpes culture is diagnostic of herpes. I don't know why the blood test (antibody) was negative, but it's not used to make a diagnosis, only to determine whether the virus is present. I would trust the culture. ...Read more

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Does 3 Hiv negative test confirms your HIV negative?

Does 3 Hiv negative test confirms your HIV negative?

Need details: A single nucleic acid test after the interval during which this becomes positive is proof enough that you are not infected. You're young. I trust you'll play safe from now on, and if you continue to have obsessive thoughts that you have become infected, sit down with your physician or someone who's trained in helping you get back into control of these unwanted and unhelpful thoughts. ...Read more

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2009- ELISA HIV test- positive, western blot- neg. 2010-oraquick negative. 2014- elisa-indeterminate wb- neg. Low risk for hiv. Could I have lupus?

2009- ELISA HIV test- positive, western blot- neg. 2010-oraquick negative.  2014- elisa-indeterminate wb- neg. Low risk for hiv. Could I have lupus?

Not a test for lupus: The HIV test is not a test for lupus. What's clear is that you don't have hiv. You'll never know why your elisa was positive and then indeterminate, and it's not worth investigating. False positive elisas are not uncommon; that's why they have to be confirmed with western blot. ...Read more

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Can an HIV antibody screening test be positive but the western blot negative?

Yes: There are 2 reasons for this kind of result: (1) a false positive, or (2) early infection before seroconversion. In someone at low risk for HIV without symptoms, another negative WB in 1 month means there's no infection. In someone at risk or with symptoms of acute infection, a viral load can be helpful. The new 4th generation antigen/antibody tests will eliminate this problem. ...Read more

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Can a blood test detect herpes?

Can a blood test detect herpes?

Herpes antibodies: A blood test can detect herpes antibodies and exposure but it takes a visualization of the actual lesions when they are present to confirm the diagnosis. ...Read more

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Does blood contaminate a pregnancy test?

Unclear question: Blood contamination of urine used for pregnancy test may produce unreliable result. ...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

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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Doctor, i tested negative on 5 week ELISA blood test (hiv), enough to prove me HIV free? Seriously until this moments i'm very worries and sacre

Doctor, i tested negative on 5 week ELISA blood test (hiv), enough to prove me HIV free?  Seriously until this moments i'm very worries and sacre

Is PCR an option?: You have my sympathy -- any thoughtful person would be anxious. Simply because of your level of concern, see whether you can get assayed using the polymerase chain reaction, which is our gold standard. ...Read more

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Truvada 3-6wks post exp. 5wks, bilateral,firm matted groin node. 9wks- armpit lumps. 11wks (bilateral cervical nodes & rapid negative blood test. Hiv?

Truvada 3-6wks post exp. 5wks, bilateral,firm matted groin node. 9wks- armpit lumps. 11wks (bilateral cervical nodes & rapid negative blood test. Hiv?

Need to examine: It is not feasible to provide a meaningful opinion without taking additional history, physical examination and may be some tests. It would be prudent to see your doctor, as your symptoms warrant an evaluation.
Wish you good health! ...Read more

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So if I get a regular blood test does hiv show up in that test ?

No: A grown-up does well to be tested yearly for HIV. Routine bloodwork doesn't include an HIV assay, and consent is always required. Best wishes. ...Read more

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Can marajuana show up on a blood test for hiv?

Can marajuana show up on a blood test for hiv?

Typically not: Blood testing is usually focused on what the ordering provider is looking for period. If the test is ordered for HIV, the specimen will only be tested for HIV. Thanks for trusting HealthTap! ...Read more

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If a person is willing to do a blood test for HIV is that a good sign?

If a person is willing to do a blood test for HIV is that a good sign?

HIV Honesty: It could be assumed good that a new special someone willing to do a blood test for HIV and (while they are at it) herpes i ; ii, but the results will only be known when the tests come back. You cannot tell if people have HIV or herpes by looking at them, as they might not even know themselves. With herpes, you can have only one breakout but are still infected (and can infect others) for life. ...Read more

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What incurable std's can be doagnosed by a blood test? Excluding hiv.

Hepatitis: Although not technically incurable i would not want to take any chances with hep b or c which may be sexually transmitted. Otherwise all the diseases are curable. ...Read more

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After you take a blood test for HIV and test negative will they call you or if you test positive will they call you?

After you take a blood test for HIV and test negative will they call you or if you test positive  will they call you?

In general: It is the obligation of the ordering clinic to provide you your HIV test results, regardless of being positive or negative. Be proactive if you have not heard from them and call yourself! ...Read more

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Negative blood test for hiv. Possible that it hit window of seroconversion. How often do you see false negatives after 1-2 months?

Never in my career: False negative HIV means there is infection but the antibody test is negative. The situations where this occurs have to do with the timing of the test or continued risky behavior where a person is infected within days after the test. The home kits that use oral fluid are false negative 1 out of 12, according to cdc website on HIV testing. The blood test done at the right time is very accurate. ...Read more

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How accurate for 3 week blood test on HIV and std? If positive or negative isn't it 100%? Do i need to test anymore? Still waiting for results

How accurate for 3 week blood test on HIV and std? If positive or negative isn't it 100%? Do i need to test anymore? Still waiting for results

Let me explain: Standard antibody HIV testing can have two stages. The most commonly used initial screening test is either an enzyme immune assay (eia) or the enzyme-linked immunosorbent assay (elisa). If the eia/elisa test is negative, no additional testing is done. If the eia/elisa screening test is positive, that result must be confirmed with a more specific test called "western blot.". ...Read more

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Hi. I had unprotected sex with a guy. I went 30 days after exposure and got a blood test for hiv and syphilis they came back - Should I trust this ?

Retest at 3&6 months: For HIV, it can take up to 6 months after exposure to develop the antibodies that are detected by the test. So retesting is recommended usually at 3 and 6 months post-exposure. For syphilis, antibodies can take several weeks to be produced, so again, if you are concerned, another retest in the future may be indicated. Testing for other STDs such as chlamydia and gonorrhea is recommended also. ...Read more

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6 months into a relationship i had a blood test for hiv. If it was negative and I have no other partners since(married him)is it necessary to retest?

HIV Testing: Yes. Six months is likely a good and ideal time to wait for antibody testing. But, if the partner you are with has had other partners in those six months then ongoing testing may need to occur. ...Read more

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How accurate is a 6 week oraquick HIV result and a 7 week blood test for HIV/HEP c both negative? should i still be worried?

HIV testing: You have tested way too soon for either of these tests to be valid. You must be at least twelve weeks past exposure for these tests. ...Read more

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When dr orders "serious infection" blood test like hiv, does lab secretly take personal info from blood - like your DNA / gene info to identify you?

When dr orders "serious infection" blood test like hiv, does lab secretly take personal info from blood - like your DNA / gene info to identify you?

HIV paranoia: I appreciate your question. It reminds me of the days i began getting HIV tests after my cousin died in utah in 1984 from HIV after a blood transfusion. I was sure that just being around her had someone how made me more susceptible. But, of course the answer to your question is no. There is no such test that a lab would do. There is also no interest in the lab about identifying you in any way. ...Read more

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I have a blood test for hiv tomorrow evening, can i drink alcohol 1-2 hrs after it?

I have a blood test for hiv tomorrow evening, can i drink alcohol 1-2 hrs after it?

Yes: If you are at risk for HIV and then need to drink soon afterward, it makes me wonder if at age 18 that you are making lifestyle choices that might not be in your best long term interest. However there is no immediate risk to drinking a few hours after a blood test. ...Read more

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I had a blood test for HIV, syphillis and gonerrhea and the results were negative, would they report herpes if it was found in the blood stream?

I had a blood test for HIV, syphillis and gonerrhea and the results were negative, would they report herpes if it was found in the blood stream?

Was test ordered?: The laboratory would not have tested for herpes, if the test was not ordered. Had it been tested for the lab would have reported the results. ...Read more

Dr. Ed Friedlander
1,509 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