... (Rheumaklinik Aachen, Aachen, Germany), Prof Dr MJ Fritzler (University of Calgary, Calgary, Canada) and by Labor Limbach (Heidelberg, Germany) To assess further the assay specificity, we analyzed ... studies are necessary to screen known autoantigens containing dimethylated arginine residues for epitopes assay Assay performance characteristics of the anti -SmD3 peptide (SMP) assay (a) Intra-assay ... Intra-assay and interassay variability, (b) linearity, and (c) receiver operating characteristic analysis The intra-assay and interassay variability, expressed as coefficient of variation in percentage...