Aa
window period 6??
An HIV test reveals infection status by detecting the presence or absence of antibodies to HIV in the blood. Antibodies are produced by an individual’s immune system to fight off foreign pathogens. Most people have a "window period" of usually 3 to 6 weeks during which antibodies to HIV are still being produced and are not yet detectable.
This early period of infection represents the time of greatest infectivity, but transmission can occur during all stages of the infection. If someone has had a recent possible HIV exposure, retesting should be done after 6 weeks to confirm test results, which enables sufficient time to pass for antibody production in infected individuals.
This early period of infection represents the time of greatest infectivity, but transmission can occur during all stages of the infection. If someone has had a recent possible HIV exposure, retesting should be done after 6 weeks to confirm test results, which enables sufficient time to pass for antibody production in infected individuals.
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http://www.cdc.gov/globalaids/Resources/pmtct-care/docs/TM/Module_6TM.pdf
Page 11
#4
In an adult, a positive HIV antibody test result means that the person is infected, a person with a negative or inconclusive result may be in the “window for 4 to 6 weeks but occasionally up to 3 months after HIV exposure. Persons at high risk who initially test negative should be retested 3 months after exposure to confirm results
Page 11
#4
In an adult, a positive HIV antibody test result means that the person is infected, a person with a negative or inconclusive result may be in the “window for 4 to 6 weeks but occasionally up to 3 months after HIV exposure. Persons at high risk who initially test negative should be retested 3 months after exposure to confirm results
I checked it " we all already know that the HIV antibody test becomes quite reliable at 4 weeks and as good as conclusive at 6 weeks." this line attracted me. So I think it must b a regulatory issue as mentioned by the forum doctor u advised me to check..
As most of the country use 3rd generation elisa so a test at 6 week or 7 week is highly accurate according to me.
As most of the country use 3rd generation elisa so a test at 6 week or 7 week is highly accurate according to me.
Make your own judgement, here's a good reference from highly credible experts:
http://www.medhelp.org/posts/show/1704700
http://www.medhelp.org/posts/show/1704700
Well antigen detectable upto 4 weeks. But WHO mentioned about antibodies specifically. In combo test there is two test one is for antigen and other is antibody. Why they test an antibody in just 4 weeks??
It also depends on the type of HIV test.
If its a combo test (antibody+antigen), and the test is non-reactive 4 weeks post exposure, its highly accurate and reliable
If its a combo test (antibody+antigen), and the test is non-reactive 4 weeks post exposure, its highly accurate and reliable
http://www.who.int/mediacentre/factsheets/fs360/en/
check it. Is that means 6 week is inclusive??
check it. Is that means 6 week is inclusive??
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1. http://www.drtanandpartners.com/hiv-%E2%80%93-understanding-the-window-period/
2. http://www.drtanandpartners.com/hiv-p24-agab-test-duo-test-combo-test-at-our-clinic/