Considering that PRF is clinically used in combination with dental implants and collagen membranes, we exposed titanium discs and collagen membranes to PRF lysates. We showed here that PRF-derived TGF-β activity adsorbs to titanium implants and collagen membranes indicated by the changes in gene expression and immunoassay analysis. Our study points towards TGF-β as major target of PRF and suggest that TGF-β activity released by PRF adsorbs to titanium surface and collagen membranes.