The problems of the present invention are to provide a simple and convenient means for the examination of renal failure and to provide a method for the measurement of a lipid component in urine utilizing the said examining means. Means for solving the problems according to the present invention is a method for the measurement of a lipid component contained in urine which is characterized in using a surface-active agent in a sufficient amount for solubilizing the insoluble fat in urine and in using an enzyme acting the lipid component. It also provides a simple and convenient means for the examination of renal failure by the measurement of a lipid component contained in urine, by the measurement of lipoproteins in urine and/or apoproteins in urine in addition to the above measurement and by a combination of measurement of surface antigen of leukocyte contained in urine therewith. |