Oral Glucose Tolerance Test: Why It Is Done
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Why It Is Done
The oral glucose tolerance test (OGTT) is done to:
- Check pregnant women for gestational diabetes. When done for this purpose, the test is called a glucose challenge screening test, and it is usually done during the 24th to the 28th week of pregnancy. You have an increased chance of developing gestational diabetes if you:
- Have had gestational diabetes during a previous pregnancy.
- Have previously given birth to a baby who weighed more than
. - Are younger than age 25 and were overweight before getting pregnant.
- Confirm the presence of gestational diabetes if other blood glucose measurements are high.
- Screen women who have polycystic ovary syndrome (PCOS) for diabetes.
- Diagnose prediabetes and diabetes.
| Last updated: | July 25, 2007 |
|---|---|
| Author: | Caroline Rea, RN, BS, MS |
| Reviewed By: | Caroline S. Rhoads, MD - Internal Medicine, Alan C. Dalkin, MD - Endocrinology |
| Editors: | Susan Van Houten, RN, BSN, MBA, Tracy Landauer |
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