There are 2 tests for gestational diabetes:
1. Glucose Challenge Test (GCT) - 75g glucose drink then a blood test 1 hour later, nothing but water in that hour.
2. Glucose Tolerance Test (GTT) - 6 hour fast, then fasting blood glucose, then 75g glucose drink, then a blood test 1 hour and 2 hours later, nothing but water in those 2 hours.
Some laboratories use a 50g glucose load for the GCT. The GTT is considered more accurate but when compliance is an issue the WHO recommends the GCT as it can be undertaken on a more opportunistic basis.
Hope this clarifies things for you.
Leanne.
From: "Abby and Toby" <[EMAIL PROTECTED]> Reply-To: [EMAIL PROTECTED] To: <[EMAIL PROTECTED]> Subject: [ozmidwifery] Glucose Challenge Testing Date: Tue, 14 Dec 2004 22:21:48 +1100
Hi,
Couple of questions about this-
1) Is this application normal or necessary, the fasting for so long I mean - "My midwife wants me to have a glucose challenge test that involves 12 hours fasting then a blood test, drinking a sugary drink, 1hr later another blood test, drinking another drink and then another hour later another blood test."
I have never heard of someone having to fast for that long beforehand?? Seems like a strange thing to ask a pregnant woman to do. Any insight would be great.
2) Does anyone have any info, links, research etc about the accuracy, relevance/importance, evidence etc for the glucose test?
Thanks in advance. Love Abby
(P.S. Still working on the `evidence` about controlled crying, nutrition etc)
Leanne Wynne Midwife in charge of "Women's Business" Mildura Aboriginal Health Service Mob 0418 371862
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