MCV, MCH, MCHC, and RDW
These are measurements or calculations related to red blood cells (RBCs) and are components of the Complete Blood Count (CBC), a commonly requested test used for a variety of purposes. To learn more about the CBC and these individual components, please review the CBC page, especially "The Test: How is it used?" and "The Test: What does the test result mean?" (RBC Evaluation) sections.