An Ectopic ACTH Secreting Metastatic Parotid Tumour

Table 3

Dynamic tests to assess hypercortisolism.

Investigation	Procedure	Timing of the test	Results
Overnight dexamethasone test (ODST)	1 mg dexamethasone given at midnight	Measurement of 9 am cortisol	785 nmol/L
Low dose dexamethasone test (LDDST)	0.5 mg dexamethasone given every six hours for 48 hours	Cortisol measured after last dose of dexamethasone	577 nmol/L