Medically reviewed by Yasmine S. Ali, MD, MSCIMedically reviewed by Yasmine S. Ali, MD, MSCI The red blood cell (RBC) count is a test that measures the number of oxygen-carrying blood cells in your ...
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 ...