The ability of the body to use and store glucose. Glucose tolerance is zero in persons with diabetes mellitus.

The ability of muscle cells and the liver to remove glucose from the bloodstream. As you age, glucose tolerance decreases.

Glucose tolerance is a measure of your liver and muscles' ability to remove glucose from your bloodstream. Glucose tolerance levels decrease with age.

a test of the body's power to metabolize glucose.

The power of the normal liver to absorb and store large quantities of glucose and the effectiveness of intestinal absorption of glucose. The glucose tolerance test is a metabolic test of carbohydrate tolerance that measures active insulin, a hepatic function based on the ability of the liver to absorb glucose. The test consists of ingesting 100 grams of glucose into a fasting stomach; blood sugar should return to normal in 2 to 21 hours after ingestion.