When both MCV (Mean Corpuscular Volume) and MCH (Mean Corpuscular Hemoglobin) are low, it suggests microcytic hypochromic anemia. In this type of anemia, red blood cells are smaller than normal (microcytic) and have reduced hemoglobin content (hypochromic). Mean corpuscular hemoglobin is the average amount of hemoglobin per blood cell, and it is measured with a blood test. This value can help diagnose anemia and other diseases. Low MCH, or mean corpuscular hemoglobin, is a condition that occurs when the average amount of hemoglobin found in red blood cells is lower than normal. This can have a significant impact on overall health, as hemoglobin is responsible for carrying oxygen to the body's tissues and organs. Mean corpuscular hemoglobin (MCH) blood test measures the hemoglobin in red blood cells. Low or high MCH can indicate a condition like anemia.