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Window period of RNA HIV test

What is the window period of the RNA HIV test right now?

Some websites say 1-2 weeks but some researchers say it would take 5 weeks (but the research is posted nearly ten years ago)

I have unprotected sex with a prostitute on 17th July, i plan to have a RNA test on 1st August.
44 Responses
Avatar universal
Window period is still three months. PCR RNA tests are not stand alone tests and have to be followed up with an antibody test.
Avatar universal
please do not say something that you dont understand.

The antibody needs about 3 months to develop, but the RNA test is to test the HIV directly, the official window period of RNA test is 9-11 days or 1-2 weeks.
Avatar universal
You were given the facts. PCR-RNA tests are not diagnostic tests. They are supplemental tests. Go to the FDA website and look it up.

The AMPLICOR HIV-1 MONITOR Test is not intended to be used as a screening test for HIV or as a diagnostic test to confirm the presence of HIV infection.

http://www.fda.gov/Cber/PMAlabel/P9500054LB.pdf
Avatar universal
It was not few years ago.

in 2006, RNA test is approved by FDA for diagnostic use

http://www.fda.gov/oashi/aids/listserve/listserve2006.html#10606
277836 tn?1359666174
No it isnt my god you read and read you need to get the facts right
Avatar universal
I guess you can't comprehend what you read. Now before you go trying to correct anyone have your facts straight.

"The test, however, is not meant to be used as a stand-alone test for the diagnosis of HIV-1 infection.  A positive nucleic acid test should be viewed as a unconfirmed test result, indicating probable infection, and should be followed up later with traditional EIA antibody testing to confirm infection with the Human Immunodeficiency Virus."

http://www.fda.gov/oashi/aids/listserve/listserve2006.html#10606

Avatar universal
i didn't say it is a stand-alone test, i am just say RNA is for diagnostic use.

"however, the APTIMA test has been approved for the diagnosis of primary HIV-1 infection, as well as for confirming HIV-1 infection when tests for antibodies to HIV-1 are positive.
"

Actually i am asking how long is the window period for RNA test.

Anti-body test is 3 months, not RNA.

http://www.metrokc.gov/health/APU/rna-testing/

Avatar universal
MOVE ON. You can't comprehend what you read and we are not going to argue with you over it. An RNA doesn't have a window period. It's a monitoring test. Anymore and you will be reported to MedHelp.
Avatar universal
RNA has a window period, it cannot detect HIV copies less than 40 copies/ml.

please report me, i dont know what i have done is wrong. I am just asking the actual window period of RNA test but you guys said it is 3 months and none.  
Avatar universal
Do you know what a viral load test is? Did you or did you not read what an RNA test is used for? It's a supplemental test, it's also a montoring test.  It cannot give you a conclusive test result by itself.  I get a PCR RNA every 3 months so don't try to tell me about RNA testing.
Avatar universal
You test RNA every 3 months and says RNA test does not have window period. But according to Public Health (http://www.metrokc.gov/health/APU/rna-testing/), it says 1-2 weeks. Again, i just asking the actual window period of RNA test.
Avatar universal
Stop arguing.  You posted like you wanted help, then you get the answers, and I guess don't like what you hear, so you answer your own question.
No more posting, or there will be a warning from MedHelp.
Avatar universal
Forget it. Anyone that comes to this forum and asks if there is a cure for HIV isn't doing anything but playing games.
Avatar universal
some websites say 9-11 days and some websites say 1-2 weeks but some researchers say it is 5 weeks, i just wondering which one is correct.
Avatar universal
What was your risk to begin with that brought you to this forum?
Avatar universal
So, ya think the "T" word?  
Avatar universal
No doubt about it.
188761 tn?1584567620
COMMUNITY LEADER
RNA PCR is an excellent test for early detection since it directly looks for the HIV genetic material in the body directly.

RNA PCR is for early detection, test at the 14 th day after the exposure backed up by an antibody test at the 12th week is good enough to rule out HIV.

"These tests, which are more costly and used less often than antibody tests "

1. They are expensive
2. They are not a stand alone test, they have to backed up by an anti body test FOR CONFIRMATORY REASONS ONLY.
1 Comments
Can I do PCR RNA/DNA 7 days  after exposure?The reason is I want to have a check ASAP.
Avatar universal
Studies seem to indicate that the viral load would peak around three weeks after exposure, so it is often recommended to take the RNA test after 21 days. Information about the PCR is often dubious. I've read some studies about detection of primary infection and PCR and this is what I've gathered:

* All studies show that PCR/RNA is 100% accurate during ARS
* "False positives" are, despite of what you read, very rare with the new assays. Also, a false positive result is easy to detect (viral load <2500) and will be negative after re-testing.

Of course there will be exceptions.

In Austria, a PCR/RNA after three weeks is often considered conclusive, and most experts there will tell you that it's as accurate as a three-months ELISA. In the neighbouring country, Switzerland, however, they don't use the test at all... Go figure.
Avatar universal
* "False positives" are, despite of what you read, very rare with the new assays. Also, a false positive result is easy to detect (viral load <2500) and will be negative after re-testing.

That's total BS. My viral load is less than 50 and I'm indeed postive.
Avatar universal
I guess you read that one through too hastily, Teak. What you describe is a false NEGATIVE, now a false positive. A false negative result at three weeks would be extremely unlikely, although I'm sure they do happen... there are at least four studies on primary infection that show that viral-load test was able to pick up ALL of the real positive subjects suffering from ARS.
Avatar universal
I did not read your post to hastily. What I quoted is what you posted. A viral load of <2500 does not mean a person is not positive at all. Not all people have ARS.
Avatar universal
King County Public Health, the Dr. HHH is a member.

The FDA has not approved these PCR tests as ways to identify new HIV infections. The regular antibody test continues to be the most accurate and reliable way for people to know if they are infected with HIV.
Avatar universal
This is what I mean:

A false-positive result (that is, a detectable, low viral load in a blood sample from a person that is not infected), when it does happen, will easily be recognised as a false-positive, because, if taken during the first weeks since possible infection, the viral load would be expected to be much higher. Also, when this sample is re-run, it will indeed be undetectable.
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