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James - 23 Feb 2004 23:37 GMT

From my research, I see the normal window period between hiv neg. and
hiv pos. is very short, usually under two months. What percentage of
the population seroconverts in less than two months, how about after
three and four?

Assume a person is exposed, then waits three months and tests neg.
That person waits another month- now four months post exposure and
test neg. again. What is the likelyhood of that individual being in
the clear?

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Baby Peanut - 24 Feb 2004 12:52 GMT

> From my research, I see the normal window period between hiv neg. and
> hiv pos. is very short, usually under two months. What percentage of
[quoted text clipped - 5 lines]
> test neg. again. What is the likelyhood of that individual being in
> the clear?

http://www.thebody.com/Forums/AIDS/Treatment/Archive/Testing/Q3688.html

The average time from infection to seroconversion (the development of
a positive antibody test) is 63 days, with almost all seroconversions
taking place between 6 and 12 weeks after infection. So if a test is
negative at 3 months, the chances are that it will stay that way.
Nevertheless, it is generally recommended that a follow-up test be
performed at 6 months because of the small number of people who take
longer than 3 months to seroconvert. There is no reason that this
would differ from one country to another. -- Cal Cohen

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