Participation in the supply of the Zurich region with blood and blood products based on voluntary and unpaid blood donation within the framework of the blood donation service of the Swiss Red Cross and the coordinated sanitary service in accordance with the Swiss Red Cross's blood donation service guidelines and the ordinances based thereon; continuous adaptation of blood products to the requirements of modern medicine; operation of a reference laboratory for blood group serology; research in the field of transfusion medicine, in particular blood group serology, blood component therapy, safety of blood transfusions and the like.