A mean corpuscular volume (MCV) is a type of blood test that measures the size of your red blood cells. A low MCV means that your red blood cells are smaller than average, possibly indicating iron ...

Mean corpuscular volume, or MCV, measures red blood cell size. A typical adult MCV level is 80 to 100 femtoliters (fl). The above figure comes from a 2024 topic review. A doctor usually requests an ...