Introduction The analysis of 24-h urine is the gold standard to diagnose metabolic
abnormalities in the stone-forming patient. However, urinary composition changes …

Purpose: We have previously reported a high rate of urinary metabolic abnormalities in
stone forming children compared to normal controls. At our institution a 24-hour urine …

Purpose The metabolic evaluation of children with nephrolithiasis begins with a 24-h urine
collection. For adults, the diagnostic yield increases with consecutive collections; however …

Purpose: Urinary stone disease is relatively rare in children and urinary metabolic
evaluations have been the standard in our practice. We have previously reported a high rate …

OBJECTIVES: To determine which risk factors help predict recurrent stone formation. Urinary
stone disease is relatively rare in children. At our institution, a full urinary metabolic …

Background Various genetic and environmental factors are involved in urolithiasis. The 2
most common metabolic abnormalities are the increase in urinary calcium and low urinary …

Background The diagnosis and follow-up of stone forming patients is usually performed by
analysis of 24-h urine samples. However, crystallization risk varies throughout the day …

Purpose The prevalence of urinary stone disease is increasing in children. We previously
reported a high rate of urinary metabolic abnormalities, including hypercalciuria and …

Introduction Specific factors associated with the risk of developing pediatric urinary stone
disease remain unclear, especially those that may be associated with recurrent stone …

Purpose: Reference values for stone risk factors in 24-hour urine samples for nonstone
forming children are limited. We measured urinary stone risk factors in healthy children 3 to …