Intravenous Glucose Tolerance Test in Normal Persons

as a supplement to the oral method has been pointed out by many workers. Moreover, the possibility of error in the result of oral method due to diminished absorption has been shown by Beeler, Bryan, Cathcart and Fitz (1922). The flat blood sugar curve obtained by Thaysen (1929) after the oral administration of glucose, as has been shown by the author, is due to the diminished absorption of glucose. AVe have observed in some of our investigations that oral administration of glucose even up to 100 gm. may have little or no effect on the blood sugar curve for a period of 2 hours. Nausea,. sometimes caused by oral administration of glucose, alters the result of the test as has been shown by Hale-White and Payne (1926). In view of the above facts we decided to study