Preliminary investigation on blood-sampling time during oral glucose-insulin releasing test in subjects with normal glucose tolerance / 中华内分泌代谢杂志

Intravenous glucose tolerance test(IVGTT)and oral glucose-insulin releasing test(OGIRT) in 12 subjects with normal glucose tolerance were performed.The results showed that the peak of insulin secretion Was at 40 minutes during()GIRT.The ratio of the change of insulin-to-glucose at 40 minutes(△I40/△G40)is an index in reflecting insulin sensitivity and β-cell function.