Question

The glucose tolerance test challenges the body's ability to secrete and use insulin, performed after a _____-hour fast.

Answer 1

The answer is it is performed after a 10 hour fast. Glucose tolerance tests are also used to make a diagnosis to diabetes. The OGTT is used to monitor for, or diagnose diabetes in people with a fasting blood glucose level that is high, but is not high enough (above 125 mg/dL or 7 mmol/L) to meet the diagnosis for diabetes.