Abstract
For the estimation of urinary creatinine, DNSK-reagent was used and the estimation was satisfactorily carried out under the conditions as follows ; 1) Sample urine is prepared by diluting with water to contain 10∼80γ per ml. of creatinine. 2) To 4 ml. of sample urine, each 0.5 ml. of 2% DNSK-reagent and 5% KOH solution is added, and after 25 minutes the color developed is estimated at 530 mμ.
