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This is way late, but thank you for confirming this! My MCV was 93, in the midst of severe anemia and b12 deficiency. I wondered how the MCV could show virtually nothing, and wondered if perhaps the two confounded each other. The MD said that was impossible...I generally assume whatever is said to be 'impossible' is actually rather probable at this point.With the induced iron deficiency MCV can be very small. If combined with b12/folate deficiency (large mcv) instead of large or small MCV it can be average by both influences.