Do you recommend using a 24-hour urinary cortisol/urinary creatinine ratio over a 24 hour urine cortisol to screen patients for Cushing's syndrome?

There are several tests available to look for a diagnosis of Cushing's syndrome in patients suspected to have this entity. These include AM and PM cortisol to look for altered diurnal variations. Salivary cortisol test and 24-hour Urinary cortisol. However, in my opinion, the overnight Dexamethasone...