THE AMOUNT AND NATURE OF URINARY PROTEINS IN NORMAL HUMAN SUBJECTS 12

Abstract

Glomerular filtrate and normal urine have gen- erally been regarded as being protein-free. The presence of protein in the urine has long been considered as indicative of renal disease. The classical experiments of Wearn and Richards (1), demonstrating the absence of protein in the glo- merular filtrate and urine of the frog, added im- petus to this belief.