Oral Glucose Tolerance Test
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Oral Glucose Tolerance Test
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Test Overview
The oral glucose tolerance test (OGTT) measures the body's ability to use a type of sugar, called glucose, that is the body's main source of energy. An OGTT can be used to diagnose prediabetes and diabetes. An OGTT is most commonly done to check for diabetes that occurs with pregnancy (gestational diabetes).
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Last Updated:
July 25, 2007- Author:
- Caroline Rea, RN, BS, MS
- Medical Review:
- Caroline S. Rhoads, MD - Internal Medicine
Alan C. Dalkin, MD - Endocrinology
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