The mean corpuscular hemoglobin, or "mean cell hemoglobin" (MCH), is the average mass of hemoglobin (Hb) per red blood cell (RBC) in a sample of blood. It is reported as part of a standard complete blood count. MCH value is diminished in hypochromic anemias. RBCs are either normochromic or hypochromic. They are never "hyperchromic". If more than the normal amount of hemoglobin is made, the cells get larger—they do not become darker.