MCV
MCV measures the average size of your red blood cells. It helps classify the type of anemia you may have.
Category: Complete Blood Count
Also known as: mcv, mean corpuscular volume
Reference range: 80–100 fL (Source: ABIM)
Standard unit: fL
High values may indicate
High MCV (macrocytosis) may indicate vitamin B12 deficiency, folate deficiency, liver disease, hypothyroidism, or alcohol use.
Low values may indicate
Low MCV (microcytosis) may indicate iron deficiency anemia, thalassemia, chronic disease, or lead poisoning.
Frequently asked questions
- What is a normal MCV level?
- A typical reference range for MCV is 80–100 fL (source: ABIM). Reference ranges vary by laboratory, age, and sex, so always compare against the range on your own lab report.
- What units is MCV measured in?
- MCV is most commonly reported in fL. Labs in different countries may use other units — you can convert between them with BloodId's blood test unit converter.
- Where do MCV reference ranges come from?
- BloodId uses ABIM standard reference ranges and educational information from MedlinePlus (see our methodology). Reference ranges still vary by lab, age, and sex, so always compare against your own report.
- Can I track MCV over time?
- Yes. Upload results from any lab and BloodId charts your MCV over time against its reference range, so you can see whether the trend is rising, falling, or stable.