During the administration of small doses of dexamethasone (0.5 mg. every 6 hours) the menses began, and the headache definitely decreased. This clinical response coincided with a fall in the ...

For the LDDST, a diagnosis of Cushing's syndrome is excluded if patients' serum cortisol levels are suppressed to ≤50 nmol/l, after the administration of 0.5 mg dexamethasone at 6 h intervals ...