The MCV on a patient is calculated to be 115 fL and the MCHC is 35 g/dL. What, in general terms, must be true of the MCH if it is consistent with the previous two indices?
a. It is impossible to know.
b. It should be in the reference range.
c. It should be below reference range.
d. It should be above reference range.
ANS: D
The MCV is elevated, suggesting that the red cells are macrocytic. The actual weight of hemoglobin/red cell (the MCH) must therefore be elevated (above reference range) for the concentration of hemoglobin/volume (the MCHC) to be reference range.
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