The Renin-Angiotensin System

Abstract
Plasma Renin Activity as a Screening Procedure in HypertensionTwo approaches to the use of peripheral plasma renin activity as a screening test for hypertensive disease have been taken: to hospitalize the patient and impose strict control of dietary sodium in an effort to be able to relate his response to a rigidly defined set of normal criteria; and to allow the patient to remain ambulatory and on an ad lib sodium intake and rely on his 24-hour urinary sodium excretion to normalize his response. Stimulation or suppression tests give more information about the patient's renin reserve and the responsiveness . . .