Age-Dependent Curves of Matos et al to Identify Increased Urinary Oxalate to Creatinine and Urate to Creatinine Ratios in Pediatric Patients

Increased urinary excretion of oxalate or urate may be associated with increased risk of nephrolithiasis. Matos et al identified the upper limit of normal (at 95% level) urinary excretion of oxalate and urate relative to urinary creatinine. The authors are from Centre Hospitalier Universitaire Vaudois (CHUV) and Lausanne University in Switzerland.