What Does High MCV Mean?
High MCV means your red blood cells are larger than normal (macrocytosis).
Common Causes
- Vitamin B12 deficiency — impaired DNA synthesis
- Folate deficiency
- Alcohol use disorder
- Liver disease
- Hypothyroidism
- Certain medications — methotrexate, phenytoin
Next Steps
- Check vitamin B12 and folate levels
- Check TSH
- Evaluate alcohol use
- Check methylmalonic acid if B12 borderline
Source: NLM MedlinePlus, American Association for Clinical Chemistry.
Ratings summarize government-reported measures — they don't capture your personal needs. Visit the facility, ask about staffing and services, and use CMS checklists. This profile is informational only and is not a recommendation.
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