urine creatinine analysis by Jaffe reaction with spectrophotometric readout urine creatinine analysis by Jaffe reaction without deproteinization and spectrophotometric readout 2021-09-14T16:47:26Z A method for assaying the creatinine in urine from which excess proteins have not been removed, using the Jaffe reaction, the reaction of creatinine and picric acid in an alkaline solution, followed by quantitation of the colorimetric readout using a spectrophotometer at 520 nm. MMO:0000764 PMID:19420905 alkaline picrate urine creatinine assay without deproteinization and spectrophotometric readout measurement_method_ontology slaulede