Systemic Effects After Local Injection of Platelet-rich Plasma

Autologous platelet-rich plasma (PRP) was prepared using the RegenKit THT system (RegenLab SA, Le Mont-sur-Lausanne, Switzerland) following the manufacturer's instructions. Medical technicians, who had been well-trained by the manufacturer, were responsible for the process of PRP preparation. For each patient, 8-10 mL of venous blood was drawn and collected to the commercial RegnLab THT tube, which contained 1 mL sodium citrate. After single centrifugation at 3400 revolutions per minute (rpm) for 8 minutes, 4-5 mL of PRP was yielded with leukocytes maintained at physiological levels and red blood cells depleted. Then, the blood components were separated, with the platelet pellet resting on the separating gel. PRP for later application was obtained by re-suspending the platelet pellet in the plasma supernatant by gently inverting the unopened RegenKit THT tube 5 to 10 times.

saline injection