The 3 hour OGTT is a diagnostic test for
gestational diabetes. It measures glucose concentrations over three hours after a
100-g oral glucose load. The test is done in the morning after an overnight fast of between 8 and 14 hours, and after at least 3 days of unrestricted diet (≥150 g carbohydrate per day) and
At least two or more values must be
equaled or exceeded for a positive diagnosis.
These values represent the equivalent
glucose oxidase plasma values calculated from the original data using the Somogyi-Nelson technique
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Mahan CM. Criteria for the oral glucose tolerance test in pregnancy.
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4.Vandorsten JP, NIH consensus development conference: diagnosing gestational diabetes mellitus.NIH Consens State Sci Statements.
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