What does a high MCH on blood work mean?

A high Mean Corpuscular Hemoglobin (MCH) level indicates that red blood cells contain an increased amount of hemoglobin, which can suggest conditions such as macrocytic anemia, where red blood cells are larger than normal. This can be caused by deficiencies in vitamin B12 or folate. Elevated MCH levels may also occur in liver disease or certain bone marrow disorders. It's important to interpret MCH results in conjunction with other blood tests for a comprehensive understanding of an individual's health.