Home › Lab markers › MCH (Mean Corpuscular Hemoglobin)
COMPLETE BLOOD COUNT (CBC)
Also printed as: MCH · Mean cell hemoglobin
Educational only — not medical advice.
MCH is the average amount of hemoglobin inside each red blood cell. It is calculated from hemoglobin and red cell count rather than measured directly. In practice it tracks closely with MCV.
MCH mostly corroborates what MCV already suggested. Doctors use the two together to decide whether a change in red cells is about iron, about vitamins, or about something inherited.
TYPICAL ADULT RANGE
Many labs report roughly 27–33 pg for adults. Ranges vary by lab. Reported in pg.
Reference ranges vary by lab, by method, and by age and sex. Always read your own result against the range printed on your report.
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A low MCH usually appears alongside a low MCV and points in the same direction — most often low iron stores, sometimes an inherited trait such as thalassemia trait, occasionally chronic inflammation. On its own it adds little; read with ferritin and MCV it becomes useful. Your doctor will usually order iron studies as the practical next step.
A high MCH generally accompanies a high MCV — bigger cells hold more hemoglobin — so the same considerations apply, including B12 and folate levels, regular alcohol intake, thyroid activity, and certain medications. It is rarely acted on by itself. Bring it up as part of the red cell picture rather than as a standalone number.
Your doctor is the one who can read this number against your history, symptoms, and medications.
Educational only — not medical advice. Lab results only mean something alongside your history, symptoms, medications, and the rest of your panel. Bring questions to your doctor; they are the one who can interpret your results for you.
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