What Is a RDW Blood Test? An RDW blood test – also known as a red blood cell distribution width blood test – is a measure of the difference in your red blood cells’ size and volume. RDW is one part of ...
NAINR. 2004;4(4):231-239. Mature erythrocytes are biconcave disks. RBCs with abnormal morphology may be removed from the circulation leading to anemia. Therefore, certain types of anemia may be ...