plasma creatinine analysis by Jaffe reaction with spectrophotometric readout plasma creatinine analysis by Jaffe reaction without deproteinization with spectrophotometric readout 2014-06-10T13:49:29Z A method for assaying the creatinine in blood plasma 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. JSmith Jaffe reaction plasma creatinine assay with spectrophotometric readout, without deproteinization MMO:0000545 measurement_method_ontology