A Method for Discrimination Between Calcium Oxalate Kidney Stone Formers and Normals

Abstract
Ca2+ concentration vs. time was measured in solutions containing admixture of 10% tested urine of [human] normals and stone-formers, during induced calcium oxalate percipitation. A discriminating index was formulated by statistical analysis of the data. Stone-formers and normals differ significantly with respect to the measurements and the discriminating indices. An equation to evaluate the odds of stone-forming based on results of an individual test was derived. The discrimination index may be recommended as a diagnostic tool.