Objective:  To assess the diagnosis for vesicoureteral reflux (VUR) among children aged 2 months to 5 years comparing between the Thai Pediatric Nephrology Association endorsed clinical practice guideline (CPG) 2014 and urinary tract infection (UTI) CPG 2010.

Materials and Methods: The medical records of febrile children (age 2 months -5 years) who were admitted to the HRH Princess Maha Chakri Sirindhorn medical center during Jan 2002 - Dec 2012 were retrospectively reviewed. The CPG 2014 and 2010 were applied and the diagnosis of VURs were assessed.

Results: A total of 71 UTI patients were included in this study. By using the CPG 2014 and CPG 2010, VUR was detected in five and ten patients respectively. The severity of VUR detected only by using CPG 2010 in five patients was only low-grade severity. Of note, two patients with high grade VUR were detected by both CPGs.

Conclusion: The application of CPG 2014 was able to detect high grade VURs which might further need a surgical management. The long term follow up was recommended for all children with UTI due to possibly undiagnosed low-grade VUR in some cases.