Biochemistry General e244a146 Glycemic index is defined as: A Glucose control in last 3 months B Measure of the change in the blood glucose following ingestion of proteins C Measure of the change in the blood glucose following ingestion of carbohydrate D Measure of the change in the blood glucose following ingestion of fats. High-Yield Explanation The Glycemic index (GI) of a carbohydrate containing food is a measure of the change in the blood glucose following its ingestion