The following result is obtained by our internet Research Algorithm: Donated blood is spun in centrifuges to separate it into transfusable components like red cells, platelets, and plasma. Plasma is processed with cryoprecipitate which controls the risk of bleeding by helping blood to clot. Remember Red cells and platelets are leuko-reduced, as white cells are removed to reduce the possibility of the reaction at the time of transfusion. Each component is packaged in a unit in standardised amount, so that doctor can use it easily for transfusion. Stored donated blood keeps itself healthy for up to 42 days. • Red cells are stored in refrigerators at 6ºC for up to 42 days. • Platelets are stored at room temperature in agitators for up to five days. • Plasma and cryo are frozen and stored in freezers for up to one year.