plasma creatinine analysis by Jaffe reaction with spectrophotometric readout plasma creatinine analysis by Jaffe reaction with deproteinization and spectrophotometric readout 2014-06-10T13:53:28Z A method for assaying the creatinine in deproteinized plasma (that is, blood plasma from which excess proteins have 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, with deproteinization MMO:0000546 measurement_method_ontology