WHAT IS MEAN PLATELET VOLUME (MPV) TEST?
The MPV is an automated measurement of the average volume of platelets. It is the arithmetic mean volume of the platelet population derived from the platelet histogram on automated Coulter counters. Increased MPV may reflect either increased platelet activation or increased numbers of large, hyperaggregable platelets. Because of the MPV increases during conditions of rapid platelet turnover, it can signify the release of larger, younger platelets into the circulation. When the MPV is low, the platelets are generally smaller. The MPV is expressed in femtoliters (fL).