Evaluation of Secondary Hypertension • Primary aldosteronism - PRA, PAC • Renal artery stenosis - Renal artery duplex ultrasonography • Pheochromocytoma - Fractionated plasma metanephrines • Hypothyroidism - TSH, T3, fT4 • Hyperthyroidism - TSH, fT4 • Cushing syndrome - Late-night salivary cortisol. 24-h urine free cortisol, overnight DST • Mineralocorticoid excess syndromes - PRA, PAC #Secondary #Hypertension #resistant #Evaluation #workup #diagnosis