<prompt> All are true about stored blood, exceptCan be stored for 40 daysGood source of plateletsLevels of Potassium increasedDeficient Factors V and VIII  <response>: B Good source of platelets Potassium intoxication; Stored blood may contain up to 30 mmoll of potassium by its expiry date. Citrate intoxication may cause tremors, arrhythmias, acidosis and hypocalcaemia. Like platelets, clotting factors VIII and V are labile and their levels fall quickly. Currently blood is allowed to be kept in blood banks for up to 42 days Stored blood is deficient of: WBC Platelets after 24 hours Factors V and VIII CPD blood has a shelf- life of 3 weeks. In stored blood the RBC suffer a temporary reduction after 24 hours in their ability to release oxygen to the tissues of recipients. So if massive transfusion is required 2 units of blood 7 days old is transfused. Storage temperature - - 4degC - 2degC.Source: Website 