The normal value of Platelet Pressure Volume is generally 0.18%~0.28%, due to the different testing equipment in each hospital, so the measurement results will be somewhat different, the specific reference value is based on the hospital test report. Platelet pressure is calculated by multiplying the average volume of platelets by the platelet count, and its clinical significance is related to the changes in the number of platelets. 1. When the platelet pressure area decreases, it often represents a decrease in the number of platelets in the blood, which is mostly seen in aplastic anemia, idiopathic thrombocytopenic purpura, myelofibrosis, and so on. 2. When the platelet count rises, it often represents an increase in the number of platelets, which is commonly seen in primary thrombocythemia, chronic granulocytic leukemia and other diseases. If there are abnormalities in platelet pressure, it is necessary to combine with other indicators to make a comprehensive judgment, and it is recommended to go to the hospital in a timely manner to further identify the causes under the guidance of a physician.