Context: Primary aldosteronism (PA) is an established cause of hypertension, whereas high-normal serum aldosterone levels have been linked to an increased risk for hypertension.
Objective: We aimed to define the post-fludrocortisone-dexamethasone suppression test (FDST) normal cutoff values of aldosterone and the aldosterone to renin ratio and evaluate the presence of PA in normotensive individuals.
Design: This study was designed as a case-control study.