The normal MCV ( Mean Corpuscular Volume) range remains relatively constant across different age groups, typically between 80 and 100 femtoliters (fL) per red blood cell for adults. However, reference ranges may vary slightly based on the laboratory's specific values. Age-related changes in MCV are generally not significant, and the normal range for MCV remains consistent in adults. MCV is an important parameter measured in a complete blood count (CBC) test to assess red blood cell health. It ... MCV measures the average size of red blood cells and can help diagnose anemia and other conditions. Learn about the normal MCV range , causes and symptoms of high or low MCV , and how it differs in children and adults. For most adults, the MCV normal range is about 80–100 femtoliters (fL). Here’s what different results can mean: Cells are smaller than normal. Common causes: iron deficiency, thalassemia, and chronic disease inflammation. Cells are larger than normal. However, the MCV blood test normal range generally lies in the range of 80 - 100 femtoliters (fl). 1. 2. 3. What is meant by low MCV levels? MCV low (mean corpuscular volume low) means that your blood sample does not contain MCV levels in the adequate amount.