What does the mean corpuscular volume (MCV) measure?

Mean corpuscular volume (MCV) is a critical hematological parameter that specifically measures the average size of red blood cells (RBCs). This measurement is expressed in femtoliters (fL) and provides important information about the overall morphology of red blood cells, which can help in diagnosing various types of anemia and other blood disorders. An elevated MCV may indicate macrocytic anemia, often associated with vitamin B12 or folate deficiency, while a decreased MCV can suggest microcytic anemia, typically related to iron deficiency.

The significance of MCV lies in its role in understanding the overall health of red blood cells, which are essential for oxygen transport in the body. By assessing the average size, healthcare providers can gain insights into the underlying conditions affecting red blood cell production and lifespan. This information is vital for determining appropriate treatment options and further diagnostic testing.