Reticulocyte Volume Distribution Width Standard Deviation

**Semantic type:** Laboratory Procedure

**Definition:** A measurement of the volume dispersion within a reticulocyte population, calculated as the width of the distribution curve at the 20% frequency level.

**Synonyms:** - RDWRSD - RDWr Standard Deviation - RDWr-SD - Red Cell Volume Distribution Width Standard Deviation in Reticulocytes - Ret RDW Standard Deviation - Ret RDW Standard Deviation