[Analysis of urinary proteins by disc electrophoresis: a method for the differential diagnosis of kidney diseases (author's transl)].

After introductory observations on the role of the kidney in protein metabolism, the methodology and results of disc electrophoresis on polyacrylamide, using detergents, are discussed. Separation of urinary proteins according to molecular weight permits the differentiation of kidney diseases into those of the glomerulus and of the tubules. Proteinurias of prerenal and postrenal origin are also differentiated. Owing to the considerable time involved, this methodology cannot at present be introduced for routine purposes.