what does rdw mean on a medical re
Red blood cell distribution width (RDW or RDW-CV or RCDW and RDW-SD) is a measure of the range OF variation of red blood cell (RBC) volume that is reported as part of a standard complete blood count. Usually red blood cells are a standard size of about 6-8 Î¼m in diameter. A low RDW (below 10.2%) means that the red blood cells vary very little in size.