There are several kinds of stimulation and suppression tests to check pituitary function, depending on the disease. Here are some reference sites: The tests are: ACTH Stimulation Test Overnight Dexamethasone Suppression Test Long Dexamethasone Suppression Test Metyropone Test CRH Stimulation Test CRH Stimulation Test with Dexamethasone Inferior Petrosal Sinus Sampling (IPSS) with CRH stimulation Growth Hormone Stimulation Tests : Clonidine Test, Arginine Infusion Test, Glucagon Test TRH Stimulation Test GnRH Stimulation Test Glucose Tolerance Test Glucogen Test Hypertonic Saline Infusion Test Prolonged Fast for Evaluation of Hypoglycemia Growth Hormone Suppression Test Calcium Pentagastrin Infusion Test (thyroid cancer) Water Deprivation Test (Diabetes Insipidous) You can read more about diagnostic tests from The Endocrine Surgeon. I've had 8 of the above tests. ![]() Minnie | 