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What is a hematology lab test MCV for?

April 26, 2017hematology lab mcv Test

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What is a hematology lab test MCV for?

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Mean corpuscular volume (MCV) is a measurement of the average size of your RBCs (red blood cells). The MCV is elevated when your RBCs are larger than normal (macrocytic), for example in anemia caused by vitamin B12 deficiency. When the MCV is decreased, your RBCs are smaller than normal (microcytic), such as is seen in iron deficiency anemia or thalassemias.