How to Read MCH in Blood Test Results

Doctors review several markers in a person's bloodwork to determine possible health risks. MCH (Mean Corpuscular Hemoglobin) is a marker that shows the amount of hemoglobin per red blood cell. This reading helps determine whether optimal oxygen levels are being picked up from the lungs and transported through the body. Once a doctor understands whether blood MCH levels are too high or too low, more research can be done regarding possible disorders results might suggest. Here is how to read whether blood MCH levels are normal.

Confirm the name and date of the blood work test.

Locate "MCH" in the list. A number and "pg" should be next to it; this represents the number of picograms of hemoglobin in a single cell.

Interpret your MCH. Optimal MCH readings are 30 pg, and range from 27 to 33 pg for normal adults. Levels outside of the 27 to 33 pg range should be reviewed with a doctor. Levels below 27 pg suggest conditions such as anemia, an iron deficiency. Levels above 33 pg suggest possible thyroid issues.


Abnormally high or low MCH levels may reflect a number of disorders. Because your doctor usually has your complete medical history, he can give you the best interpretation of your blood work.