Represents mean volume of platelets; usually reported as femtoliters (fL), calculated by dividing plateletcrit by number of platelets (analogous to calculation of mean red blood cell volume [MCV]). Normal range is 8-12 fL. It is high in cases of thrombocytopenia caused by peripheral destruction. MPV is low in cases of thrombocytopenia caused by megakaryocyte hypoplasia.
MPV is measured by most modern automated hematology analyzers, but the value is not always included in the complete blood count.