Platelet-rich plasma (PRP) is prepared by centrifuging anticoagulated whole blood obtained by phlebotomy.Therefore,it contains a hyperphysiological concentration of autologous platelets, 3-8 times the concentration of platelets in whole blood [1]. However, the exact definition of PRP has not been determined in terms of the concentration of platelet, and most published reports differ on PRP concentrations [2].
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Introduction