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Medical Forum / Diseases and Disorders / Herpes / October 2003

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Testing wait period?

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john - 28 Oct 2003 19:12 GMT
Has anyone had any experience with the amount of time required to wait
for a blood test after exposure?  If have read various ranges from 2
weeks to 6 months.  It seems like 6 weeks should be enough for the
newer tests, but has anyone out there tested neg at 6 weeks and later
tested positive?  I know the recommendation is 12-16 weeks to be
absolutely sure, but what percentage of people are still not testing
postive after 6 weeks?  Is it just the difference between 95% and 99%
when going from 6 to 12 weeks?
Grant - 29 Oct 2003 01:22 GMT
Blood tests are expensive, so to make sure you get enough out of your $$,
wait the recommended 12 - 16 weeks.  If you test earlier than that, you'll
just have to retest later.

ar

> Has anyone had any experience with the amount of time required to wait
> for a blood test after exposure?  If have read various ranges from 2
[quoted text clipped - 4 lines]
> postive after 6 weeks?  Is it just the difference between 95% and 99%
> when going from 6 to 12 weeks?
M.L.S. - 29 Oct 2003 16:15 GMT
>Has anyone had any experience with the amount of time required to wait
>for a blood test after exposure?  If have read various ranges from 2
[quoted text clipped - 4 lines]
>postive after 6 weeks?  Is it just the difference between 95% and 99%
>when going from 6 to 12 weeks?

I'm trying to find a chart of graph of antibody development over time
after exposure but haven't found such a thing, yet.

Deep down in the PDF file at the link below, however, is this:

"Another common situation is the asymptomatic person who may have
recently been exposed to genital herpes. If this individual is within
8 weeks of exposure, genital herpes is difficult to diagnose, as many
assays are most sensitive when the antibody profile has fully
developed (usually after 6–8 weeks [Figure 5])."

http://www.ihmf.org/library/monograph/m_07.pdf

[Figure 5 is not legible, by the way]

I would guess that reliability of a test at six weeks is around 50/50
or worse.

Still looking...

Mike
Angela - 29 Oct 2003 17:57 GMT
John,

There is a 12-16 range because everybody is different when it comes to the
herpes virus.
Not everybody will test correctly at 6 weeks and that is why they use that
12 - 16 range.
If folks want to be certain . . . they can always wait for the 16 week
range. If somebody has a flare up they can have cultured then they don't
have to wait. The important thing is to get that culture done within the
first 24 ours of the outbreak.

http://members.cox.net/yoshi2me/Links/Links.htm

Angela
 
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