Mean Corpuscular Volume (MCV) measures what?

Mean Corpuscular Volume (MCV) measures what?

• A. Total hemoglobin content per erythrocyte
• B. Average volume of the individual erythrocyte
• C. Concentration of hemoglobin in the erythrocyte
• D. Rate of erythrocyte production

Answer: (B)

Mean Corpuscular Volume measures the average size of a single red blood cell. This helps classify anemia as microcytic (smaller than normal) or macrocytic (larger than normal), guiding the diagnostic approach. The other indices describe different cell properties: total hemoglobin content per cell is the Mean Corpuscular Hemoglobin, the concentration of hemoglobin within the cell is the Mean Corpuscular Hemoglobin Concentration, and the rate of red blood cell production is related to erythropoiesis or reticulocyte production, not cell size. MCV is calculated from hematocrit and red blood cell count and is usually given in femtoliters, with a normal range around 80–100 fL.

Mean Corpuscular Volume measures the average size of a single red blood cell. This helps classify anemia as microcytic (smaller than normal) or macrocytic (larger than normal), guiding the diagnostic approach. The other indices describe different cell properties: total hemoglobin content per cell is the Mean Corpuscular Hemoglobin, the concentration of hemoglobin within the cell is the Mean Corpuscular Hemoglobin Concentration, and the rate of red blood cell production is related to erythropoiesis or reticulocyte production, not cell size. MCV is calculated from hematocrit and red blood cell count and is usually given in femtoliters, with a normal range around 80–100 fL.