[Ultrasonic coagulometry as a method of testing compounds with antiplasmin activity].

An ultrasonic interferometer has been used to study the process of fibrin clot lysis according to the decrease in the rate of propagation of an ultrasonic wave in the latter. A significant decrease in the sound fall rate on adding epsilon-aminocaproic and trans-4-aminomethylcyclohexanecarbonic acids to the system indicates their activity inhibiting fibrinolysis. N-nicotinoyl derivatives of this compounds possess less pronounced antiplasmin activity.