The red cell distribution width (RDW) blood test measures how equal your red blood cells are in size. One of several tests included in a complete blood count (CBC), RDW is measured as a percentage.
Medically reviewed by Gagandeep Brar, MD The red cell distribution width (RDW) blood test measures differences in the volume ...
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.
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