The<unk>  is a medical test in which glucose is given and blood samples taken afterward to determine how quickly it is cleared from the blood. The test is usually used to test for diabetes, insulin resistance, impaired beta cell function, and sometimes reactive hypoglycemia and acromegaly, or rarer disorders of carbohydrate metabolism. In the most commonly performed version of the test, an oral<unk>  (OGTT), a standard dose of glucose is ingested by mouth and blood levels are checked two hours later. Many variations of the<unk>  have been devised over the years for various purposes, with different standard doses of glucose, different routes of administration, different intervals and durations of sampling, and various substances measured in addition to blood glucose.
Glucose tolerance test
Insulin tolerance test
Postprandial glucose test
Glucose test
Random glucose test
Ambulatory glucose profile
Quantitative insulin sensitivity check index
Trinder glucose activity test