The dexamethasone test involves the administration of a synthetic glucocorticoid. Knowing about negative feedback mechanisms, how do you think this test helps determine the function of the pituitary?   Since you couldn't answer one of my questions heres the last one. Describe how steroid hormones, for example cortisol, are metabolized in the body. What are the benefits of using a 24-hour urine test to measure this hormone?

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