Oral Glucose Tolerance Test (OGTT)
Diabetes Health|February - March 2021
Dr. Suganthi Kumaran explains the importance of the Oral Glucose Tolerance Test.
Oral Glucose Tolerance Test (OGTT)

Oral glucose tolerance test (OGTT) is a test done to determine how the body handles the sugar or glucose from the food that is consumed. This test can determine whether a person is at risk of developing diabetes or already have it. OGTT is one of the confirmatory tests done to diagnose Type 2 Diabetes and Gestational Diabetes Mellitus (GDM) which is diagnosed at 24-28 weeks of pregnancy.

Test explained

The test is done after 8 hours of fasting. After the blood is drawn to test fasting blood sugar, the individual is given 75 g of glucose, mixed in water, orally and then blood is drawn again after 2 hours to test post-prandial blood glucose.

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