Table 2.
Median (range) growth factor and cytokine concentrations (pg/mL).
| PRP-concentrating system | |||||
|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | |
| TGF-β1 | 2,633 (1,331–8,444)a | 27,913 (16,450–47,782)d | 4,830 (90–15,671)b,c | 4,042 (2,242–6,404)a,b | 6,296 (3,878–17,703)c |
| PDGF-BB | 0 (0–0)a | 3,072 (737–6,562)b | 47 (0–270)a | 0 (0–296)a | 0 (0–57)a |
| TNF-α | 0 (0–40.8) | 0 (0–0) | 0 (0–0) | 0 (0–0) | 0 (0–0) |
| VEGF | 0 (0–0) | 0 (0–0) | 0 (0–0) | 0 (0–0) | 0 (0–0) |
Statistical comparisons were made between the different platelet-rich plasma (PRP) systems for transforming growth factor-β1 (TGF-β1) and platelet-derived growth factor-BB concentrations. If two systems share a common superscript letter within a row they are not significantly different (p > 0.05).