Reply by the authors

摘要

We read with interest the comments concerning the diagnostic evaluation of cystinuria. We appreciate the authors for their interest and their constructive commentary. According to a literature reference, we have falsely accepted the unit conversion, as presented in the aforementioned book section. We would like to affirm that it was a conversion error. On the basis of further literature references, ' 1300 )imol/g creatinine corresponds to 150 Hmol/mmol creatinine and the sum of urine COLA (cystine, omithine, lysine, and arginine) excretion of 5900 (imol/g creatinine corresponds to 670 |lmol/mmol creatinine. These corrections are of great importance, to avoid mistakes in the diagnosis of cystinuria in patients without renal stones.