The usual but empirical initial dose in brain tumor patients is an intravenous bolus of 10 mg of dexamethasone, followed by a maintenance dose of 4 mg given by the intravenous (IV) route every 6 ...

Dexamethasone provided 4 mg at every 6 hours ... If the cortisol level is greater than 10 mcg/dl, the steroid therapy can be stopped. If the morning cortisol level is less than 10 mcg/dl, 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 ...