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 ...
Red blood cells (RBCs) are considered the physiological ‘workhorses’ of the circulatory system, comprising over 99% of all blood cells. Studies have shown that RBCs have a relatively long life span, ...