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 ...
A Complete Blood Count (CBC) might look like a simple test, but it’s one of the most powerful tools doctors use to understand what’s happening inside your body. In just a small vial of blood, a CBC ...