LAUSR

OBJECTIVES To determine and compare the platelet growth factors in human platelet lysate (HPL) prepared from citrated whole blood, with final centrifugations at 4oC and 25oC. METHODS We collected specimens of citrated whole blood from 27 healthy volunteers. The platelet-rich plasma (PRP) was separated to prepare the HPL, which was further divided into 2 portions for the final centrifugation, at 4oC and 25oC, respectively. Platelet growth factors were measured and compared between the 2 groups. RESULTS All platelet growth factors were higher than those in PRP prepared from citrated whole blood. Moreover, the final centrifugation at 25oC resulted in noninferiority of platelet-growth-factor level. CONCLUSION This study provided a simple method for small-volume of HPL preparation using only 10-15 mL of citrated whole blood. Further, the entire process of centrifugation can be performed at room temperature of 25oC, which is more applicable than lower temperatures for other laboratories.