PREGNANCY-BIRTH Messages for August, 2000: Re: 3 hour GTT (glucose tolerance test)

Re: 3 hour GTT (glucose tolerance test)

From: Tonja (anonymous@obgyn.net)
Wed, 30 Aug 2000 17:42:05 -0500 (CDT)

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In reply to: Ann: "3 hour GTT (glucose tolerance test)"
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The water may have been a bad idea and could have diluted the glucola, possibly skewing the results. I know with both of my GTTs (both of which I had to take the 3-hr. "challenge", both of which came back normal), there were at least two instances where my blood was drawn 10 or 15 minutes late - I was told it wasn't a concern. During the tests with both of my pregnancies, NO water or food was drilled into my head at least a dozen times!

On the upside, TONS of women who failed the initial glucose test and had to take the challenge have gone on to pass it with no problems at all (me included), so just because you failed the first one, and passed the second, it doesn't mean the results of the second were skewed - there are simply a lot of false and borderline positives with the initial test.

If you're concerned about the water intake issue, by all means, ask your care provider.

Tonja

At Wed, 30 Aug 2000, Ann wrote: >
>Hi:
>
>I posted earlier this week when I found out I had failed my one hour
>test. I had a question then and I have another one now.
>
>Today I took the 3 hour GTT. I drank about 24 oz of water about an hour
>and a half to an hour and forty-five minutes before beginning the first
>blood draw. (the fasting blood draw). Could that skew the results in
>any way? Also, when I went back to take the second blood draw, the
>phlebotomist was 15 minutes late in taking my blood so instead of it
>being an hour after the glucola, it was an hour and fifteen minutes.
>Would that have skewed the data? I went back to take the other two blood
>draws on time from the original start of test time (time from which I
>drank the glucola) so I they were uneventful. Neither girl could give
>me an exact answer re: these two questions although they did both say
>that you cannot drink water after the test has begun. Please advise. By
>the way, the test both came back normal.
>
>Thanks for your input.

--
Tonja Brossette
OBGYN.net Coordinator
Pregnancy & Birth
tonja.brossette@obgyn.net

Next message: Cindy: "First Trimester Question"
Previous message: Tonja: "Re: Drunk before finding out about pregnancy"
In reply to: Ann: "3 hour GTT (glucose tolerance test)"
Next in thread: Lynn D. Montgomery, MD: "Re: 3 hour GTT (glucose tolerance test)"

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