Please note that today’s info sheet is about the 1-hour screening procedure, not the 3-hour test used to determine whether or not a patient has gestational diabetes.
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"The oral glucose challenge test is performed to screen for gestational diabetes. This test involves quickly (within five minutes) drinking a sweetened liquid (called Glucola), which contains 50 grams of glucose. A blood sample is taken from a vein in your arm about 60 minutes after drinking the solution.