Glucose tolerance test

The glucose tolerance test is a "test to determine the ability of an individual to maintain homeostasis of blood glucose. It includes measuring blood glucose levels in a fasting state, and at prescribed intervals before and after oral glucose intake (75 or 100 g) or intravenous infusion (0.5 g/kg)."

The GGT can help diagnose glucose metabolism disorders:
 * Diabetes mellitus type 2
 * Impaired fasting glucose
 * Impaired glucose tolerance