We think this might be relevant to the clinical guidance for VUR Grading (International Reflux Study Committee).
VUR Grading
VUR Classification — International Reflux Study Committee
VCUG Grading Criteria
Select the grade observed on voiding cystourethrogram (VCUG):
Select a VUR Grade
Guidelines & Evidence
Verified
Last Review: 2026
When to Use
When to Perform VCUG and Grade VUR
First febrile urinary tract infection (UTI) in children under 2 years (especially boys)
Recurrent febrile UTIs in older children
Prenatal hydronephrosis with persistent postnatal dilation
Abnormal bladder on ultrasound (thickened wall, diverticula, or ureterocele)
Family history of VUR or renal scarring in siblings
Neurogenic bladder or voiding dysfunction with recurrent infections
Follow-up after endoscopic injection or ureteral reimplantation to assess resolution
Pre-transplant evaluation in select cases
Clinical Importance
Vesicoureteral reflux (VUR) is the retrograde flow of urine from the bladder into the ureter and/or kidney. It is a major risk factor for pyelonephritis and renal scarring in children. The International Reflux Study Committee grading system, based on voiding cystourethrogram (VCUG), remains the gold standard for classifying severity and guiding management decisions between conservative observation, antibiotic prophylaxis, endoscopic therapy, and surgical reimplantation.
Related Scores in Practice
In clinical practice, this assessment is frequently evaluated alongside other validated measures. Depending on the patient's presentation and specific diagnostic requirements, you may also need to utilize the Sfu Hydronephrosis Grading, Tanner Staging, or the Aast Renal Injury Scale to formulate a comprehensive care plan.
