blood creatinine analysis creatinine analysis by liquid phase colorimetry with spectrophotometric readout creatinine analysis by Jaffe reaction with spectrophotometric readout 2014-06-10T13:41:17Z A method for assaying creatinine in a sample 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. JSmith Jaffe reaction creatinine assay with spectrophotometric readout MMO:0000542 PMID:13072520 alkaline picrate creatinine assay with spectrophotometric readout measurement_method_ontology