The most frequently studied parameters are WBC, CRP, neutrophil rate, procalcitonin, erythrocyte sedimentation rate, NLR, and bilirubin.9,20 Among them, serum CRP and WBC are widely used in the diagnosis process of patients with suspected appendicitis in the emergency department.23 Predictive values of the CRP and the count of WBC were investigated in patients with AA in the study of Beltran et al.24 The sensitivity of the WBC count at the 12th hour after symptoms started was 90% according to their study. Here, CRP is linked to appendicitis.