A glucose tolerance test is the administration of glucose to determine how quickly it is cleared from the blood. The test is usually used to test for diabetes, insulin resistance, and sometimes reactive hypoglycemia. It depends on a number of factors including the ability of the intestine to absorb glucose, the power of the liver to take up and store glucose, the capacity of the pancreas to produce insulin, the amount of "active" insulin it produces, and the sensitivity of the cells in the body to the action of insulin.
12 Hrs fasting required. Please advice the patient not to leave the premises during the course of testing as to be able to monitor patient symptoms. Separate plasma from cells ASAP