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Doctor insights on: 3 Week Dna Pcr

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Unprot sex with a female 5 years ago. Painful ejac. 2 weeks later, mono like 3rd wk. Many neg HIV test 3rd generation. (neg viral load 10 weeks, 3 neg DNA pcr, neg ab, neg RNA PCR today 5yrs. Hiv poss?

Unprot sex with a female 5 years ago. Painful ejac. 2 weeks later, mono like 3rd wk. Many neg HIV test 3rd generation. (neg viral load 10 weeks, 3 neg DNA pcr, neg ab, neg RNA PCR today 5yrs. Hiv poss?

Highly unlikley: But hopefully you were also tested for a host of other stds at the same time. The lesson is universal barrier protection. With mono-like illness this could be one of many other diseases, like cmv, toxoplasma, and so on. Only a detailed work-up is likely to clear this up, but then you have to ask yourself if it will make a difference in your long-term health, particularly if you are now better. ...Read more

Polymerase Chain Reaction (Definition)

Polymerase chain reaction is a method of finding a specific piece of dna and copying it over and over again until there is enough to study. The technique allows a scientist to detect very small amounts of dna in a swab sample then reproduce enough of it to study it. It is very sensisitive for detecting the presence of certain bacteria and is also used in doing other ...Read more


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Low risk exposure. Tested with the p24 antigen on week 1, 3, 4 weeks and DNA hiv pcr at week 6 all negative.4 months elisa and negative. Conclusive?

Low risk exposure. Tested with the p24 antigen on week 1, 3, 4 weeks and DNA hiv pcr at week 6 all negative.4 months elisa and negative. Conclusive?

Yes: Love safely from now on, and cherish the memory of what what happened, no matter how imperfect it may have been. You shared love and that is always wonderful. ...Read more

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Is HIV DNA PCR test effective at three weeks of exposure while under pep?

Is HIV DNA PCR test effective at three weeks of exposure while under pep?

Asked and Answered: I believe this has been answered. Hiv pcr testing while on pep is not in any way appropriate to diagnose HIV infection. Once pep is stopped then HIV pcr testing is absolutely accurate three weeks after stopping the treatment. ...Read more

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Why is the HIV DNA PCR test not recommended after 4 weeks of exposure? Would it still be a good measure if used past a 3 month time frame?

Why is the HIV DNA PCR test not recommended after 4 weeks of exposure? Would it still be a good measure if used past a 3 month time frame?

HIV RNA PCR: It is completely diagnostic at four weeks. Who told you otherwise? But it must be combined with one of the newer generation antibody tests in case you happen to have a natural ability to suppress the viral replication. ...Read more

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Is HIV PCR DNA test after 9 weeks conclusive enough?

Is HIV PCR DNA test after 9 weeks conclusive enough?

HIV PCR testing: Yes. This excellent new way of testing viruses is very sensitive. It is thought that the HIV pcr dna test can narrow the window to 14 to 21 days post exposure.

A negative test at 9 weeks post exposure means you do not have hiv. ...Read more

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Hiv DNA PCR dectected on 4/08/13 and antibody negative. Still now 6/3/13 8 weeks later still show HIV anitbody negative. What are your thoughts? Is the PCR a false positive?

Hiv DNA PCR dectected on 4/08/13 and antibody negative. Still now 6/3/13 8 weeks later still show HIV anitbody negative. What are your thoughts? Is the PCR a false positive?

Not necessarily: Is it really the dna or the RNA pcr? The dna qualitative pcr is the most sensitive test and may become positive months before antibody is detected. The quantitative RNA pcr that is used for monitoring also becomes positive early. Antibodies may not develop until 3 months from the infection. So, they may still develop. If you have not seen a HIV physician and are not on art, see one asap. ...Read more

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I had unprotected oral sex 8 week ago I had 2 HIV DNA PCR test at 18 days and 46 days negative and 2 fourth generation test at 28 days and 42 days neg?

I had unprotected oral sex 8 week ago I had 2 HIV DNA PCR test at 18 days and 46 days negative and 2 fourth generation test at 28 days and 42 days neg?

HIV: The overwhelming probability is that you did not get HIV infection. You do not say whether the oral sex was done to you (in which case you were not in any significant risk), or whether you did it to a woman (not a risk). If you did to another man and semen hit the back of your throat that is a good way to become infected so in the future make sure he has a condom on. You are going to be fine. ...Read more

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Hi doctors, 20+ hiv 4th gen test (upto 14 months), 1 rna pcr (@20 weeks), 2 dna pcr (@11 & 18 week). All neg. Am I 100% free of Hiv or need more tests?

Hi doctors, 20+ hiv 4th gen test (upto 14 months), 1 rna pcr (@20 weeks), 2 dna pcr (@11 & 18 week). All neg. Am I 100% free of Hiv or need more tests?

Free: You can quit testing.
For good health - Have a diet rich in fresh vegetables, fruits, whole grains, milk and milk products, nuts, beans, legumes, lentils and small amounts of lean meats. Avoid saturated fats. Drink enough water daily, so that your urine is mostly colorless. Exercise at least 150 minutes/week and increase the intensity of exercise gradually. Do not use tobacco, alcohol, weed or street drugs in any form.
Practice safe sex, if you have sex. ...Read more

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I had unprotected oral sex on me I saw no blood I have no sores I am circumsized I have tooken a HIV dna pcr test at 18 days and a 46 also a 4 week and 6 week duo test and a 8 week rapid test am I ok?

I had unprotected oral sex on me I saw no blood I have no sores I am circumsized I have tooken a HIV dna pcr test at 18 days and a 46 also a 4 week and 6 week duo test and a 8 week rapid test am I ok?

You're OK: Oral sex is safe sex for HIV, with no proved transmissions by fellatio from mouth to penis, only rare ones penis to oral. You didn't need testing on account of this event and for sure not the multiple expensive ones you had. But the results from that combination of tests are conclusive. For sure you didn't catch HIV during that exposure and no further testing is needed. Best wishes and stay safe! ...Read more

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I had sex. Used condom. I am in a very high stress. Its 7 week since exoosure. I want to get accurate result, RNA pcr, DNA PCR be conducted cost no issue?

I had sex. Used condom. I am in a very high stress. Its 7 week since exoosure. I want to get accurate result, RNA pcr, DNA PCR be conducted cost no issue?

HIV is hard to get: I am unsure of why you are so worried. You used a condom. The HIV RNA test is accurate for sure after 21 days. No need to wait for seven weeks. Where are you? How can I help you with this panic? ...Read more

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Happy New year. How accurate is a DNA PCR HIV Test with Negative results Past 32 weeks of unprotected sex and 2weeks past protected sex with a csw?

Happy New year. How accurate is a DNA PCR HIV Test with Negative results Past 32 weeks of unprotected sex and 2weeks past protected sex with a csw?

Happy for you: You didn't get HIV from your first adventure. Protected sex when you're a man is unlikely to transmit HIV. How about playing really safe from now on -- not so much out of fear, but out of respect for that one special person who may be in your future? You can get plenty else from messing around -- including unwanted complications. It's a rare, wise guy who works hard to stay clean. Best wishes. ...Read more

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I had a recent high risk exposure. At 5 weeks I did the HIV antibody test and at 7 weeks the PCR DNA test both came back negative is this conclusive?

Retest: According to the guidelines, following exposure, one may not convert to hiv+ for up to 6 months. It's a good sign that both these test have been negative so far and retesting every 3 months for antibody would be relatively inexpensive. Take precautions when engaging in any high risk activity. Here is a link that explains more:
http://www.Aids.Org/topics/aids-basics/guide-to-hiv-testing. ...Read more

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I had unprotected oral sex with a prostitute she performed on me I had no cuts or sores on penis also circumcised also didn't see any blood in her mouth or penis I had a fourth generation test at 4 weeks and 6 weeks negative also a negative dna pcr test a

I had unprotected oral sex with a prostitute she performed on me I had no cuts or sores on penis also circumcised also didn't see any blood in her mouth or penis I had a fourth generation test at 4 weeks and 6 weeks negative also a negative dna pcr test a

Unprotected oral sex: I am assuming you are concerned about your HIV risk. Based on the information you provided I think your risk is low with the three negative tests. HOWEVER - your behavior is risky. Saliva can contain the HIV virus and while you may not have any cuts or sores - your partner could easily scratch or bite you. Be careful!! ...Read more

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Does an HIV dna/pcr test become more or less sensitive and conclusive after the 1 month mark? After 3 or 5 months?

Does an HIV dna/pcr test become more or less sensitive and conclusive after the 1 month mark? After 3 or 5 months?

No: Not sure of your question, but the test is sensitive and specific each time it is performed, at the same level when testing for the hiv. ...Read more

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How accurate is the hiv-dna by pcr?

How accurate is the hiv-dna by pcr?

Nucleic acid Test: Hiv is a RNA virus. Nucleic acid testing (nat) is done to (1) detect virus for an early diagnosis after potential exposure; (2) donated blood to detect infection, (3) to measure the viral load in someone undergoing treatment for hiv. Nat may be negative up to two weeks or so after acquiring infection. It is the most accurate of the tests for hiv. ...Read more

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What other test I can do for HIV apart from dna/pcr/nucleic test. Which is more accurate after 3 month.

HIV testing: Twelve weeks in should be just right for nearly all tests other than the old antibody test. Modern tests call the fourth generation, the HIV DUO or the RNA Tests will all be accurate at twelve weeks. ...Read more

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Is the HIV DNA PCR test accurate enough for early diagnosis?

Yes: The PCR is highly accurate and sensitive. It may take 6 weeks to 6 months for the elisa and western blot antibody tests to be positive. Since the PCR tests for the virus itself, it is detectable earlier, before an immune response has been initiated, but at a much higher price. ...Read more

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Got negative result at 15 th day of my post exposure. Now can I trust on the HIV proviral DNA PCR result?

May be too early: Hiv nucleic acid test may not turn positive in two weeks. A negative result is good but you need to be retested in three too six months to be sure. Did you get post-exposure prophylaxis? Please talk to your doctor about prophylaxis, informing your sex partners and your follow-up care. ...Read more

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Hiv has many types and subtypes. So can an HIV DNA PCR test after 21 days of possible exposure rule out HIV completely?

Hiv has many types and subtypes. So can an HIV DNA PCR test after 21 days of possible exposure rule out HIV completely?

HIV testing: Certainly possible exposure to HIV is worrisome. Rest assured however that HIV testing is extremely good. The standard PCR test is used when a patient might be in the "window period"- that is between the time from infection until an antibody response is registered by the body. Your doc ordered the right test & u can breathe a sigh of relief. Please be careful next time tho-- this & other STDs suck ...Read more

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Hi. Just wanted to know how accurate is a HIV DNA PCR test at 6 and 21 days after exposure. Both tests came back as not detected.?

Negative: The overwhelming probability is that you are negative. This is a very accurate test and rapidly becomes positive in infected individuals. The test actually measures rna. This virus is call a retrovirus because in the cell it is converted to dna and then intercalated into the cell genome. ...Read more

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How reliable are my negative results after 8 days? Hiv1 DNA PCR and elisa.

Too soon: Not reliable at all. I am shocked anyone would even offer you such a test before the test could possibly be valid!

the HIV pcr test can be accurate after fourteen days. Most of us wait till day 21 after exposure to erase all doubts. You tested too soon! ...Read more

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Can you tell me why PCR and DNA sequencing provided no results for brents pathogen.?

Can you tell me why PCR and DNA sequencing provided no results for brents pathogen.?

Homework: This is a question from a homework problem in microbiology that's already all over the answer boards. It's not appropriate to bring it here. ...Read more

Pcr (Definition)

Polymerase chain reaction is used in molecular biology to amplify copies of dna. It is used in dna cloning for sequencing, functional analysis of genes, identification of genetic finger prints, diagnosis of hereditary ...Read more


Dna (Definition)

Dna are the coding molecules found in all living things on earth which contain the instructions on how to build living things. Its is comprised the nucleotide molecules which are ...Read more