August 2013 American Association for Clinical and Laboratory Standardization (CLSI) released EP9-A3 document[1]Provides manufacturers and clinical laboratories with the latest methodological alignment and offset assessment guidelines, compared with the previous EP9-A[2]and EP9-A2[3]Compared with the documents, the experimental scheme and statistical methods provided in EP9-A3 have been greatly modified. In this study, the method comparison and shift evaluation of creatinine detection results of Roche creatininase assay (reference method) and picric acid assay (to be evaluated method) were performed with reference to the latest EP9-A3 document issued by CLSI.