Background: Urinary tract infection (UTI) is one of the commonest bacterial infection seen in children, ranking second only to those of the respiratory tract. Material & Methods:One hundred and five 6-12 years old school children with pharyngotonsillitis visit our outpatient clinic were recruited in this study. Urinalysis and mid-stream urine collection culture after disinfection of the private area were performed in all children. Serum procalcitonin, CRP and DMSA were performed in student with significant positive urine culture. Results:The urine culture results showed positive rate in 48.6%, negative rate in 39% and contamination urine culture was 12.4%. Urinalysis did not indicate the possibility of positive urine culture. Also, the procalcitonin and CRP could not indicate upper UTI when compared with the results of DMSA. Conclusion:This study indicates that urine tract evaluation is important and should be performed in children who are suspected with pharyngotonsillitis.