Top
10
Doctor insights on: Hiv Pcr Test Accuracy

Share
1

1
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

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


2

2
What is the window period for p42 antigen/ antibody dual 4th gen HIV test? And the window period for HIV RNA PCR test? When can it be conclusive?

What is the window period for p42 antigen/ antibody dual 4th gen HIV test? And the window period for HIV RNA PCR test? When can it be conclusive?

See below: Please consult this site for a detailed answer. Nucleic acid tests are conclusive about a month after acquiring infection. http://www.sfaf.org/hiv-info/testing/hiv-test-window-periods.html ...Read more

3

3
Does hcv coinfection expand only window period for antibody tests of hiv? Or does it have any affection to window period or accuracy of hiv pcr test?

Does hcv coinfection expand only window period for antibody tests of hiv? Or does it have any affection to  window period or accuracy of hiv pcr test?

Worse outcome: Coinfection with Hep C and HIV is worse than either infection alone. Window period is a minor issue compared to severity of disease. Window period can be addressed by nucleic acid tests rather than relying in antibodies. ...Read more

See 1 more doctor answer
4

4
Prednisone for 2 weeks can affect hiv rna pcr test and antibody test? So please tell which test to do for accuracy? Recently diagnosed with Bell's palsy

Prednisone for 2 weeks can affect hiv rna pcr test and antibody test? So please tell which test to do for accuracy? Recently diagnosed with Bell's palsy

No: Prednisone is the average dose will not affect any of the tests. Potentially massive doses (over 60 mg) taken for many months may marginally affect the tests but the difference will likely be unimportant. ...Read more

6

6
Is there any possibility to have pcr(-) test results but still have hiv?

Is there any possibility to have pcr(-) test results but still have hiv?

Maybe: There may be a brief period between initial infection and producing enough virus to be detectable by pcr. ...Read more

7

7
How accurate can be the results of an HIV PCR test if it was taken 10 and 20 hours after possible exposure?

How accurate can be the results of an HIV PCR test if it was taken 10 and 20 hours after possible exposure?

Too soon to test: At 10 hours after exposure, if would have been much better to take post-exposure prophylaxis rather than testing. You should still consult a doctor if you may benefit from post-exposure prophylaxis, the sooner the better. HIV PCR test, if negative at 12 weeks after exposure, would rule out HIV infection. ...Read more

8

8
Were can I get HIV RNA PCR test?

Were can I get HIV RNA PCR test?

Almost anywhere: Any doctor can order this, but if there is an std or HIV clinic near you that is a good place to go. Some commercial laboratories may do this without a doctor's order. Call and ask. Good luck and hope this is negative. ...Read more

10

10
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

Dr. Darrin Cunningham
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. Ed Friedlander
1,422 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