In the past seven decades, Blood Transfusion Institute of Serbia has been at the citizens of Serbia 24 hours service. During that period, BTIS collected almost three million units of bloood. Thanks to that, many lives have been saved. In Belgrade and all over the Central Region of Serbia, noble and responsible citizens and the BTIS teams have the same task - collection of sufficient quantities of blood needed for the treatment of patients. Their mission is the most important one - hope for life.