Mean Corpuscular Volume (MCV)
Average size of red blood cells. Helps classify the type of anemia when hemoglobin is low.
Typical normal range
80–100 fL
If high ↑
Macrocytic anemia: B12/folate deficiency, liver disease, hypothyroidism
If low ↓
Microcytic anemia: iron deficiency, thalassemia
What is a normal Mean Corpuscular Volume level?
A typical reference range is 80–100 fL. Ranges vary between laboratories and can depend on age and sex, so compare your result with the range printed on your own report.
What does a high Mean Corpuscular Volume level mean?
Macrocytic anemia: B12/folate deficiency, liver disease, hypothyroidism. A single result rarely gives a diagnosis on its own; your doctor will interpret it alongside your symptoms and other tests.
What does a low Mean Corpuscular Volume level mean?
Microcytic anemia: iron deficiency, thalassemia. Your doctor will interpret it alongside your symptoms and other tests.
About the Complete Blood Count (CBC)
A complete blood count looks at the cells in your blood: red cells that carry oxygen, white cells that fight infection, and platelets that help blood clot. It is one of the most commonly ordered tests and is often part of a routine check-up.
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Medical disclaimer: Reference ranges vary by laboratory, age, sex, and clinical context. This page is for educational purposes only and is not a diagnosis. Always discuss your results with a qualified healthcare professional.