Oral Glucose Tolerance Test

Oral Glucose Tolerance Test is also known as Glucose tolerance test. Other Common name is OGTT or GTT. Oral Glucose Tolerance Test is genrally given to pregnant women during 24th and 28th week of pregnancy for diagnosis of gestational diabetes .

Before Oral Glucose Tolerance Test The patient is instructed not to eat anything 8-10 hours.

Oral Glucose Tolerance Test OGTT Result for adults or children are as follows:

  • Below 140 mg/dL- Normal
  • 140 and 199 mg/dL-  Prediabetes
  • 200 mg/dL and above – Diabetes

If the blood glucose label is over 200 mg/dL, then doctor will repeat the test or use another test to for diagnos of diabetes