A 6-year-old girl is brought into the emergency room after an automobile accident. Physical examination shows bleeding from multiple wounds, and a CBC reveals a normocytic, normochromic anemia. Which of the following indices is most helpful in defining this patient's anemia as normocytic?

- In this case scenario, MCV is most useful in determining anemia as normocytic, as it measures the average volume of red blood cells. - It categorizes RBCs by their average size. Normal range is 80-100 fl Cells with normal size are called normocytic smaller cells are termed microcytic larger cells are referred to as macrocytic MCHC: Measures average concentration of hemoglobin in a given volume of packed red cells.