I suffered a severe TBI on Sept. 16, 1995, and I saw 8 endocrinologists in the St. Louis area but they would not run the GST:  Glucagon Stimulation Test but I had to go to Texas to see the 9th endocrinologist said he would run it if I ever came to Texas and he diagnosed my hypopituitarism and is treating it finally, 23 years after my TBI that caused it!  Thank you Dr. Urban!