<prompt> Platelet is stored in -22 2C- 4C- 2C- 20C  <response>: Two methods of storage of platelets.1. Liquid storage :Both whole blood-derived and apheresis platelets concentrate may be stored for 5 days using following some principles.The temperature must be 20- 24C.Storage container must be constructed of a plastic material that allows adequate diffusion of oxygen to meet cells metabolic needs.Platelets concentrates must be agitated during storage.2. Frozen Storage :The most widely used method for frozen storage employs controlled rate freezing 1Cmin; 5 DMSO as a cryoprotective agent. 