Aa
why National CDC's window period is 6months,now??
Dear doctors and friends:
I am a chinese gay from a city of china,but the window period of china CDC,everyone of them told me,3 months,even 12weeks, even again 6-8weeks, from CAOYUNZHEN porfessor,it is said she ever study and worked from your american U.S. Rockefeller University, the Aaron Diamond AIDS Research Center with Dr. Blumberg
she told the chinese people of internet ,the very most of hiv infection should be in 6-8weeks,but i can't trust it.Because i often even some CDC's worker told me,they had Received some one break it,in two months later.
i don't know i should believe whose, i don't know
But one piont is sure,absoutly, i am sick now ,i am feeling very bad, becauese my Muscle and joint have pain 3 weeks more after i have Fever, headache nausea diarrhea and night sweating in 5weeks ago, and they last about 1week.
And i found a a regular pattern of my now sick ,they often happened in midday and afternoon,then,after my body sweating in a whole night,i feel better in the second tommow,then into the next cycle.
that is all my case, i wish who can expain them and can tell me how to solute them
i am very appreciating you
a man who just have a mother
Thank you ,again
I am a chinese gay from a city of china,but the window period of china CDC,everyone of them told me,3 months,even 12weeks, even again 6-8weeks, from CAOYUNZHEN porfessor,it is said she ever study and worked from your american U.S. Rockefeller University, the Aaron Diamond AIDS Research Center with Dr. Blumberg
she told the chinese people of internet ,the very most of hiv infection should be in 6-8weeks,but i can't trust it.Because i often even some CDC's worker told me,they had Received some one break it,in two months later.
i don't know i should believe whose, i don't know
But one piont is sure,absoutly, i am sick now ,i am feeling very bad, becauese my Muscle and joint have pain 3 weeks more after i have Fever, headache nausea diarrhea and night sweating in 5weeks ago, and they last about 1week.
And i found a a regular pattern of my now sick ,they often happened in midday and afternoon,then,after my body sweating in a whole night,i feel better in the second tommow,then into the next cycle.
that is all my case, i wish who can expain them and can tell me how to solute them
i am very appreciating you
a man who just have a mother
Thank you ,again
We know approximately how long it may take a person to produce antibodies to HIV based on years of data, research and advancements in testing.
A person who has contracted HIV may show up positive as early as two weeks after the time they were infected. According to page 11 of the Module 6 Training Manual from the U.S. Centers for Disease Control and Prevention, the vast majority of those who contract HIV will show up positive between 4—6 weeks after infection.
To obtain a reliable test result, it is recommended that you wait at least six weeks after your last exposure. A tiny number of people may not test positive for three months. These are generally people with pre-existing immune disorders such as chemotherapy patients or recent organ transplant recipients who must take immune system-suppressing drugs. For this reason, many agencies will suggest a uniform three month test to cover everyone.
Testing beyond three months is completely unnecessary.
Here is a chart with approximate accuracy of HIV antibody testing:
Time Accuracy
2 weeks…………………………50%
3 weeks…………………………75%
4 weeks…………………………95%
6 weeks…………………………99%
3 months…………………….100%
A person who has contracted HIV may show up positive as early as two weeks after the time they were infected. According to page 11 of the Module 6 Training Manual from the U.S. Centers for Disease Control and Prevention, the vast majority of those who contract HIV will show up positive between 4—6 weeks after infection.
To obtain a reliable test result, it is recommended that you wait at least six weeks after your last exposure. A tiny number of people may not test positive for three months. These are generally people with pre-existing immune disorders such as chemotherapy patients or recent organ transplant recipients who must take immune system-suppressing drugs. For this reason, many agencies will suggest a uniform three month test to cover everyone.
Testing beyond three months is completely unnecessary.
Here is a chart with approximate accuracy of HIV antibody testing:
Time Accuracy
2 weeks…………………………50%
3 weeks…………………………75%
4 weeks…………………………95%
6 weeks…………………………99%
3 months…………………….100%
I have read on this site that rare cases are those that have transplant, IV drug users people on chemotherapy but nowhere in a medical journal has it been stated explicitly that when the CDC says rare cases that it only applies to these group of people. They would only say in rare cases.
I have been following your posts and you always said 3 months is conclusive and one can be sure that he/she is negative. Even on many occasion you said the 6 month was out of date. If 97% of people will show up in 3 months then we can't be too sure who the 3 % will actually be and we could all be gambling the health of our partners because we don't know for sure who is the rare case.
By printing the information from the CD site means a lot of people who had genuine or real risks could be in the 3% but have been receiveing assurance from you on this board that they are clean and should move on after a 3 months test.
All of this begining to get confusing. I believe that the 6 months should be the default since nobody knows who the 3% could be.
By printing the information from the CD site means a lot of people who had genuine or real risks could be in the 3% but have been receiveing assurance from you on this board that they are clean and should move on after a 3 months test.
All of this begining to get confusing. I believe that the 6 months should be the default since nobody knows who the 3% could be.
so how you explain this
by Edward W Hook, MD Oct 25, 2008 09:40PM
Finally, on the 29th, at four weeks you can expect that the HIV test would detect between 85 and 90% of HIV infections that had occurred 4 weeks earlier. At 6 weeks the figure goes up to 95%, at 8 weeks tests are 98-99% accurate and at 12 weeks results are entirely conclusive. In your situation with a single exposure of the sort you describe, the 4 week test will go a long way towards proving that you do not have HIV. Hope this helps. Take care. EWH
http://www.medhelp.org/posts/show/666793
by H. Hunter Handsfield, M.D. Oct 13, 2008 01:58PM
The health center practitioner have given you pretty accurate information. The standard antibody tests (both oral and blood) can become positive as early as 10 days; about 50% are positive by 2-3 weeks; about 90% by 3-4 weeks; and 95-99% by 6-8 weeks. By 3 months it is 100% for all practical purposes. Many health authorities say to wait 3 months, to reduce even the slightest chance that it takes that long for the test to become positive. But that is highly conservative.
http://www.medhelp.org/posts/show/655044?personal_page_id=297011&post_id=post_3606471
by Edward W Hook, MD Oct 25, 2008 09:40PM
Finally, on the 29th, at four weeks you can expect that the HIV test would detect between 85 and 90% of HIV infections that had occurred 4 weeks earlier. At 6 weeks the figure goes up to 95%, at 8 weeks tests are 98-99% accurate and at 12 weeks results are entirely conclusive. In your situation with a single exposure of the sort you describe, the 4 week test will go a long way towards proving that you do not have HIV. Hope this helps. Take care. EWH
http://www.medhelp.org/posts/show/666793
by H. Hunter Handsfield, M.D. Oct 13, 2008 01:58PM
The health center practitioner have given you pretty accurate information. The standard antibody tests (both oral and blood) can become positive as early as 10 days; about 50% are positive by 2-3 weeks; about 90% by 3-4 weeks; and 95-99% by 6-8 weeks. By 3 months it is 100% for all practical purposes. Many health authorities say to wait 3 months, to reduce even the slightest chance that it takes that long for the test to become positive. But that is highly conservative.
http://www.medhelp.org/posts/show/655044?personal_page_id=297011&post_id=post_3606471
From the National CDC...
Most HIV tests are antibody tests that measure the antibodies your body makes against HIV. It can take some time for the immune system to produce enough antibodies for the antibody test to detect, and this time period can vary from person to person. This time period is commonly referred to as the “window period.” Most people will develop detectable antibodies within 2 to 8 weeks (the average is 25 days). Even so, there is a chance that some individuals will take longer to develop detectable antibodies. Therefore, if the initial negative HIV test was conducted within the first 3 months after possible exposure, repeat testing should be considered >3 months after the exposure occurred to account for the possibility of a false-negative result. Ninety-seven percent of persons will develop antibodies in the first 3 months following the time of their infection. In very rare cases, it can take up to 6 months to develop antibodies to HIV.
Most HIV tests are antibody tests that measure the antibodies your body makes against HIV. It can take some time for the immune system to produce enough antibodies for the antibody test to detect, and this time period can vary from person to person. This time period is commonly referred to as the “window period.” Most people will develop detectable antibodies within 2 to 8 weeks (the average is 25 days). Even so, there is a chance that some individuals will take longer to develop detectable antibodies. Therefore, if the initial negative HIV test was conducted within the first 3 months after possible exposure, repeat testing should be considered >3 months after the exposure occurred to account for the possibility of a false-negative result. Ninety-seven percent of persons will develop antibodies in the first 3 months following the time of their infection. In very rare cases, it can take up to 6 months to develop antibodies to HIV.
and i ask all doctor,they can't ascertain what caused my bad feeling now,but one piont is sure,it isn't from my Nervous， i can sure ,and the doctors also sure ,my body have changed.i know
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