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 ...

Medically reviewed by Gagandeep Brar, MD Key Takeaways Talk to your doctor if you have signs of anemia, such as excessive fatigue, because it may be helpful to have a red cell distribution width (RDW) ...