Angiotensin III (7, 14 and 28 nmol/kg/min) increases urine sodium excretion (UNaV), fractional excretion of sodium (FENa), and fractional excretion of lithium (FELi) in SD rat. In RAS (renin-angiotensin system), Angiotensin III increases sympathetic nerve activity and vasopressin release and decreases the baroreflex leading to higher blood pressure in rats.