The MCV, MCH, and MCHC are the red blood cell indices in the CBC medical test. MCH stands for ‘mean corpuscular haemoglobin.’ The MCH level refers to the average amount of haemoglobin present in the red blood cells. MCV stands for ‘mean corpuscular volume.’ It measures the size of the average red blood cells. It is also used to diagnose blood disorders. MCHC stands for ‘mean corpuscular haemoglobin concentration.’ It measures the average concentration of haemoglobin per unit volume in a single blood cell. The main difference between MCH and MCHC tests is that MCHC measurement considers the size of the blood cell while MCH does not.