Haemoglobin per cell Mean Corpuscular Haemoglobin (MCH)
How much of the oxygen pigment sits inside one red cell.
Also printed asMean Corpuscular Hemoglobin · MCH
What it measures
How much oxygen-carrying protein each red cell carries.
Falls with red cell size in iron deficiency, so it confirms rather than adds to what MCV already showed.
Why it matters for how long you stay well
It follows cell size closely, so it mostly confirms the iron or inherited-trait story rather than adding a new one.
How it shows up in daily life
It falls alongside cell size when iron runs short, which is when you notice breathlessness on stairs.
High and low readings
When it reads high
Tracks large red cells.
When it reads low
Tracks iron-poor red cells.
What moves it
Daily life
- iron stores
- an inherited small-cell trait
- B12 and folate intake
Medicines known to shift it
- iron supplements (raise it when iron was low)
Listed so a result can be read in context. It is not advice to start, stop or change any medicine; that decision belongs with your physician.
Read it with
Markers that move this one, or that this one moves. One number read alone can mislead.
- Ferritin, your iron storeKnown mechanism
Ferritin pushes it up
Smaller cells hold less oxygen pigment each. So the pigment per cell falls in step with your iron stores, for the same reason.
- Red cell sizeKnown mechanism
Red cell size moves with it
Smaller cells carry less pigment each. So cell size and pigment per cell move together, and the second mostly confirms the first.
Common questions
What does Mean Corpuscular Haemoglobin measure?
How much oxygen-carrying protein each red cell carries. Falls with red cell size in iron deficiency, so it confirms rather than adds to what MCV already showed.
What does a high Haemoglobin per cell result usually mean?
Tracks large red cells.
What does a low Haemoglobin per cell result usually mean?
Tracks iron-poor red cells.
What is the usual reference range for Haemoglobin per cell?
A broad adult reference band is 27–33 pg. Labs differ, so read your result against the band printed on your own report.
Educational only, not a diagnosis. A single number means little without your history and the rest of your panel, so discuss your own results with your physician.
Typical adult reference band
- Adults
- 27–33 pg
Labs differ. The band printed on your own report is the one that applies to your result.
Reported in pg
Ageing relevance
2/5
Relevant to the ageing of one organ, or to disease screening.
Worth knowing
Smaller cells carry less pigment each, so this number falls in step with cell size.
Have a report with this marker on it? Read it in context.
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