Mean Corpuscular Volume (MCV)
- Sample Type
- Standard
- Fasting
- No
- Unit
- fL
MCV measures the average size (volume) of a single red blood cell (RBC). It is a vital RBC index used to classify anemias. By determining if cells are too small (microcytic), normal (normocytic), or too large (macrocytic), clinicians can narrow down the etiology of anemia, ranging from iron deficiency to DNA maturation defects caused by vitamin deficiencies.
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Enter your lab result to see where you stand compared to the standard reference range.
Why Context Matters
Elevated MCV (macrocytosis) can be falsely triggered by hyperglycemia or high reticulocyte counts (since young RBCs are larger). Conversely, a normal MCV (normocytic) can occur in 'mixed anemia' where both iron deficiency (small cells) and B12 deficiency (large cells) coexist, averaging out the volume.
Lab ranges are statistical averages, not biological laws. "Normal" for a 20-year-old male isn't normal for a 60-year-old female.
Clinical References
Source-of-truth databases and clinical guidelines for Mean Corpuscular Volume (MCV):
Official Sources
Research & Guidelines
Related Indicators
Medically Reviewed by Dr. Binoy Babu, MBBS
Board Certified Doctor • 10+ Years Clinical Experience
Dr. Babu is a practicing physician dedicated to empowering patients with clear, actionable medical information. He founded 2opi to bridge the gap between complex lab reports and patient understanding, ensuring everyone has access to a reliable second opinion.
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