Give a stream of consciousness and then the final answer. When plasmin breaks down fibrin, a number of soluble parts are produced. These are called fibrin degradation products (FDPs). FDPs compete with thrombin, and thus slow down clot formation by preventing the conversion of fibrinogen to fibrin. This effect can be seen in the thrombin clotting time (TCT) test, which is prolonged in a person that has active fibrinolysis.

Based on this passage, test used to identify the presence of fibrinolysis?
To answer the question, consider the following: This effect can be seen in the thrombin clotting time (TCT) test, which is prolonged in a person that has active fibrinolysis.
So, the final answer is the thrombin clotting time ( TCT ) test.