Hematology Test Clinical Data Interchange Standards Consortium Terminology Erythrocyte Distribution Width Measurement C64800 Red Blood Cell Distribution Width RDW-CV Erythrocyte Distribution Width Measurement An index of the variation in the size of the red cells and can be used to detect subtle degress of anisocytosis. It is computed directly from the RBC histogram and is calculated as a standard statictical value, the coefficient of variation of the red cell volume ditribution (ratio of standard deviation and mean copuscular volume). CDISC Erythrocytes Distribution Width RDW Erythrocyte_Distribution_Width_Measurement Red Cell Volume Distribution Width A relative measurement (ratio or percentage) of the standard deviation of the red blood cell volume to the mean distribution of the red blood cell volume in a biological specimen. C0427460 Erythrocyte Distribution Width Measurement Laboratory Procedure CDISC SDTM Laboratory Test Code Terminology CDISC SDTM Terminology CDISC SDTM Laboratory Test Name Terminology CDISC SEND Terminology