Medically reviewed by Michael Menna, DOKey TakeawaysThe MCV test measures the size of your red blood cells.A normal MCV for adults is between 80 and 100 femtoliters.MCV levels can indicate conditions ...

Patients with a low MCV are likely to have iron deficiency anemia, although thalassemia and anemia of chronic disease are part of the differential. 1 When the MCV is low, the serum ferritin level can ...