Diagnosis

Test

Indications

Functional adrenocortical adenoma

24-hour urine free cortisol

1 mg overnight dexamethasone suppression test

Cushing’s syndrome manifestations

Before major surgery

Pheochromocytoma

24-hour urine metanephrines and catecholamines

Plasma metanephrines

Patients with incidentaloma

Primary aldosteronism

Serum potassium

Ratio of morning plasma aldosterone concentration to plasma renin activity

Hypertension