 Blood samples for assessment of intra-graft coagulation events generation of thrombin and fibrin, activation and inhibition of fibrinolysis are drawn peri-operatively. Predefined clinical and demographical data are collected preoperatively and prospectively during 3 months after kidney transplantation to assess the influence of these coagulation events on delayed graft function according to Halloran criteria 8 primary outcome and acute cell mediated graft rejection primary outcome. 