Mean corpuscular hemoglobin (MCH) is a measure of the average amount of hemoglobin in the red blood cells (RBCs). The hemoglobin in red blood cells picks up oxygen in the lungs and delivers it to all ...

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 ...