A system and method for perfusing an organ with a normothermic extracorporeal perfusion system is disclosed. The perfusion system is an active flow system using a centrifugal pump to aid in circulation. The system includes a dialyzer that removes excess fluid and impurities, while maintaining the pH, which allows the perfusion system to be used for an extended period that may exceed 24 hours. The system includes a parallel circuit, which includes at least one centrifugal pump, a membrane oxygenator comprising a heat exchanger； a dialyzer； a measurement cell for real-time monitoring of oxygen saturation and hematocrit in the liver； more than one flow probe； and an organ chamber.
