We conducted a prospective, randomized, double-blind, controlled clinical study to compare the efficacy and safety of the PlasmaBlade device and cold dissection for adult tonsillectomy. Our study group was made up of 20 patients-12 men and 8 women, aged 18 to 50 years (mean: 27.1)-who were undergoing a bilateral tonsillectomy. Each patient had one randomly chosen tonsil removed by the PlasmaBlade and the other by cold instrumentation. We compared the duration of surgery, the amount of intraoperative blood loss, the number of sutures required, the status of tonsillar fossa wound healing at 7 and 14 days postoperatively, the amount of postoperative pain, and postoperative complications. We found statistically significant differences in the amount of blood loss and the number of sutures in favor of the PlasmaBlade technique. No significant differences were observed in any of the other outcomes.