Abstract
The test was performed on 12 patients diagnosed as constitutional growth retardation and on 15 normal controls with the same age distribution as the pituitary dwarfs; all 27 had a normal test. In inter -preting the insulin-glucose test, the decrease in blood sugar between 20 and 30 min. best differentiated the group of pituitary dwarfs. In this study the insulin-glucose tolerance test proved a better diagnostic aid than the metyrapone test.