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Blood count

MCV

Mean corpuscular volume

Medical review pending

What it is

Mean corpuscular volume (MCV) measures the average size of your red blood cells — like checking whether your oxygen-carrying 'buses' are small, normal, or large.

Why it matters

Cell size helps clinicians group patterns on a blood count: MCV is read with MCH, MCHC, and hemoglobin to understand how red cells are being built.

Everyday factors linked to it

Iron, B12, folate, thyroid health, alcohol, and some medicines are general factors linked to red cell size in population studies — your clinician connects them to your full history.

This page is general information, not medical advice. Always interpret results with a qualified clinician.

References

Peer-reviewed references to be added by the INNER medical team.

See your own MCV — in context

INNER reads MCV together with your whole blood, genome and gut, in plain language.

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Other markers in this area