Interpret Your Mean Corpuscular Volume Results
Enter your MCV value below and get an instant, free AI interpretation — a plain-English explanation checked against WHO/IFCC reference ranges.
Medical Disclaimer
This AI-generated interpretation is for educational purposes only and does not constitute medical advice, diagnosis, or treatment. Results may vary based on individual health factors not captured here.
Always consult a qualified healthcare professional before making any health decisions. Read full disclaimer →
Mean Corpuscular Volume Normal Ranges
MCV is the average volume of individual red blood cells, measured in femtoliters (fL).
| Age Group | Reference Range | Unit | Notes |
|---|---|---|---|
| Adults (18–64) | 80 – 100 | fL | — |
Why Doctors Order the Mean Corpuscular Volume Test
MCV is the primary tool for narrowing the differential diagnosis of anemia. A low MCV points to iron deficiency or thalassemia; a high MCV points to B12/folate deficiency or alcohol excess; a normal MCV with anemia suggests chronic disease, renal anemia, or early mixed deficiency.
How to Enter Your MCV Result
Enter your MCV value in fL, exactly as shown on your lab report.
What a Low or High MCV Can Be Associated With
Below the reference range
- Iron deficiency anemia (most common cause of low MCV)
- Thalassemia (alpha or beta)
- Anemia of chronic disease (occasionally)
- Lead poisoning
- Sideroblastic anemia
Above the reference range
- Vitamin B12 deficiency
- Folate (folic acid) deficiency
- Alcohol excess (direct toxic effect on red cells)
- Hypothyroidism
- Liver disease
These are common associations, not a diagnosis. A single result is read alongside your symptoms, history and other tests — discuss it with your doctor.
What Can Change Your MCV Result
Before you read too much into a result, consider whether any of these applied:
- Hyperglycemia (high blood sugar causes RBC swelling in EDTA tube, raising measured MCV)
- Cold agglutinins (RBC clumping raises apparent MCV)
- Reticulocytosis (young cells are larger, raising MCV)
- Mixed deficiency (iron + B12 together can give a falsely normal MCV)
Preparing for the test: No special preparation required. MCV is calculated automatically from the CBC and is not affected by fasting status.
Symptoms That Often Prompt MCV Testing
- Fatigue
- Pallor
- Tingling or numbness in hands and feet (B12 deficiency)
- Memory problems or cognitive changes (B12 deficiency)
- Glossitis (smooth, sore tongue)
Want the full clinical guide to Mean Corpuscular Volume?
Reference ranges, causes, symptoms, preparation, and FAQs.