Oral Glucose Tolerance Test (OGTT)

Oral glucose tolerance test (OGTT) is used to measure the body’s response to glucose (sugar). This test is used to confirm the diagnosis of Type 2 diabetes.

Oral glucose tolerance test (OGTT) is used to measure the body’s response to glucose (sugar). This test is used to confirm the diagnosis of Type 2 diabetes.

The test measures the glucose concentration in the blood 2 hours after consuming 75g of soluble glucose.

  • A normal blood glucose level is 7.8 mmol/L.
  • A blood glucose level between 7.8 and 11 mmol/L is considered impaired glucose tolerance or pre-diabetic. This indicates that you are at risk of developing Type 2 diabetes.
  • A reading of over 11.1mmol/L or higher indicates the presence of Type 2 diabetes.