Abstract
A radioimmunoassay for determining angiotensin II in plasma has been developed using antibodies produced in rabbits immunized with porcine-gamma-globulin/angiotensin TI-amide complex. The method can detect 10pg of angiotensin II, and is not influenced significantly by angiotensin I. The mean level of angiotensin II in subjects with normal blood pressure and no significant abnormality in water and electrolyte balance, was 53pg per ml.