serum creatinine analysis creatinine analysis by Jaffe reaction with spectrophotometric readout serum creatinine analysis by Jaffe reaction with spectrophotometric readout 2021-09-14T15:36:57Z A method for assaying the creatinine in serum (blood plasma from which fibrinogen has 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:0000762 PMID:13072520 alkaline picrate serum creatinine assay with spectrophotometric readout measurement_method_ontology slaulede