A medical fluid for a harvested organ, tissue or parts thereof, for evaluation and/or preservation. The fluid comprise oncotic agents, comprising albumin, a dextran compound and at least one globulin. The globulin has a concentration, which is larger than physiological concentration thereof. In addition, the fluid comprises hormones, such as thyroxin； triiodotyronine； cortisone, insulin； and electrolytes and optionally nutrients in substantially physiological concentrations in a physiologically acceptable medium. Moreover, the medical fluid comprises an oxygen carrier, such as erythrocytes. Further components may be dopamine； hydrocortisone； methylprednisolone； and a vasopressor agent, such as desmopressin. Moreover, cocaine, adrenalin, and/or noradrenalin, may be present in concentrations of each about 1nM to 100nM, for example in a ratio of 1:1:1.
