[A specific marker of thrombolysis: DDE complex].

A specific determination of fibrin degradation product (FbDP) is essential for the monitoring of thrombolytic therapy. In patients under thrombolytic therapy, even with tpA (tissue type plasminogen activator) fibrinogen is degraded, and fragment D derived from fibrinogen degradation, is evidenced in the plasma of treated patients. In order to determine specifically the FbDP, even in the presence of fragment D, we take into account the fact that FbDP are complexes such as DDE complex. Therefore a new Elisa technique is proposed. FbDP and fragment D are captured from plasma by immobilized anti D neo monoclonal antibody which recognizes an epitope accessible on fragment D but does not react with undegraded fibrinogen. DDE complexes are then detected specifically using a peroxidase-labelled anti E antibody. The advantage of this technique is discussed in this paper.