The diagnosis of acute fibrinous pericarditis using 125I labelled fibrinogen

Abstract Twenty-seven patients, five with clinical pericarditis and 22 without, were studied using an 125I fibrinogen technique in which the ratio of praecordial to direct blood counting was compared from day to day. There was a rise in the praecordial to blood-count ratio in all cases of clinical pericarditis. This technique may prove of value in the diagnosis of suspected pericarditis.