Joost Peerbooms

23 Concentrations of blood components in PRP separation systems and FGF-2 (1/17). As TGF-ß1, PDGF-AB, and VEGF were by far the most studied growth factors, further statistical analyses were only performed for these 3 growth factors. Table 1 Characteristics of the Included Studies* * EGF, epidermal growth factor; FC, fibrinogen concentration; FGF-2, fibroblast growth factor-2; HGF, hepatocyte growth factor; IGF, insulin-like growth factor; PC, platelet concentration; PCE, platelet capture efficiency; PDGF-AB, platelet-derived growth factor-AB; PDGF-BB, platelet- derived growth factor-BB; PEF, platelet enrichment factor; PRP, platelet-rich plasma; RBCC, red blood cell concentration; TGF-B1, transforming growth factor-B1; VEGF, vascular endothelial growth factor; WBCC, white blood cell concentration PRP Separation Systems The preparation protocols for the different PRP separation systems are summarized in Table 2. The majority of the systems use a dual spin method (6/10). Both the centrifugal force (range, 350-2008g) and the total centrifugation time (range, 5-21 minutes) differed largely between the systems. Also, a wide variation in price per kit (range, US$50- US$500) was found between the systems. 2