The test starts with a blood test taken at 9am that morning. You can take all your usual medications (please see below for exclusions or call your endocrine nurse if unsure) and eat breakfast normally first, but it is very important that the test is done at 9am. This will involve setting your alarm clock for the timings of the test including 3am on 2 nights. The timings of this test are crucial.
High Dose Dexamethasone Suppression Test
