Objective: This study aimed to investigate Platelet-to-lymphocyte (PLR) ratios in adenoidectomy patients to determine whether this ratio can be a possible predictive factor in adenoidectomy. We also aimed to investigate whether PLR can help indicate ongoing systemic inflammation on patients with adenoid hypertrophy. Materials and Methods: A total of 100 boys aged 3-11 years, who had undergone adenoidectomy for adenoid hypertrophy between 2012 and 2018 at Suleyman Demirel University School of Medicine, Department of Ear Nose and Throat (ENT), were assigned to the study group. The control group consisted of 100 healthy boys who had been circumcised in the Urology or Pediatric Surgery Departments. Patients medical records were retrospectively reviewed. The results of preoperative complete blood counts were evaluated by reviewing the patient files. The PLR value is obtained by dividing absolute platelet count by absolute lymphocyte count. Results: PLR were 91,47 and 84,15 for control and study groups respectively with no statistically significant difference (Mann-Whitney U test, p = 0.062). The Mann-Whitney U test showed no significant difference between study and control groups among WBC, platelet and lymphocyte counts (p>0.05). PLR was higher in the control group as compared to the study group. Conclusion: We observed platelet and lymphocyte standard deviations are too high, therefore we beleive that PLR is not a reliable value in adenoidectomy.