<prompt> Platelet in blood bank can be stored upto maximum of -2 days5 days10 days30 days  <response>: Ans. is b i.e., 5 days Platelet and granulocyte storage For storage in blood bank platelets and granulocytes require temperature of 20 - 24 degrees celcius. Refrigeration temperatures affect platelet viability and reduce the shelf life of platelets to only 24 hours, it is no longer recommended that platelets be stored at 1 - 6 degrees celcius. Stored platelets need to be continuously gently agitated using specially designed rotators to prevent aggregation and promote gas exchange. Depending on the method of collection system used platelets have a shelf life of minimum 1 day to a maximum of 5 days. 