To calculate MCV (mean corpuscular volume):
You need to know hematocrit (Hct) in percent (%).
You need to know RBC count (red blood cell count), expressed in million/mcL.
Divide the hematocrit by the number of red blood cells per microliter: MCV = Hct / RBC.
Multiply it with 10 to convert to a popular unit femtoliters – fl.
Our final equation: MCV [fl] = (Hct [%] / RBC [million/mcL]) × 10
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