The MCV test measures the size of your red blood cells. A normal MCV for adults is between 80 and 100 femtoliters. MCV levels can indicate conditions like anemia or vitamin deficiency. A mean ...

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 ...