The average red blood cell volume can only be the average volume of each red blood cell in femtoliters, and the average red blood cell hemoglobin volume, the average amount of hemoglobin contained in each red blood cell in picograms. The average red blood cell volume can average red blood cell volume and can be used to distinguish between various types of anemia, such as aplastic anemia, iron deficiency anemia, etc. The volume of red blood cells in aplastic anemia is normal, the volume of red blood cells in megaloblastic anemia is larger, and iron deficiency anemia, where the volume of red blood cells is smaller.