[Excretion of beta-N-acetylglucosaminidase in urine of patients with kidney transplants and workers exposed to cadmium].

A new colorimetric test for kinetic determination of beta-N-acetylglucosaminidase activity in urine is evaluated according to the diagnostic usefulness in patients after kidney transplantation and in workers exposed to cadmium. The new test is suited to monitor renal parenchymal alterations.