First, check platelets by hand. Platelets are checked by instruments according to the size of cells. Platelets are smaller than red blood cells, so the small ones are considered platelets and the big ones are considered red blood cells. Your red blood cells are small, which may interfere with platelet determination. In addition, there are many interference factors in platelet measurement by instruments, which need to be counted manually. Second, your red blood cell system is a little low, which is the most common. Iron deficiency anemia can lead to secondary thrombocytosis. At this time, thrombocytosis does not need to be treated. Third, primary thrombocytosis cannot be ruled out at present. You should have a bone marrow examination to find out the cause. Platelet count exceeding 400 is called thrombocytosis. Primary increase is seen in myeloproliferative diseases, such as chronic myeloid leukemia, polycythemia vera and primary thrombocytosis, and early myelofibrosis. The secondary increase is seen in acute infection and acute hemolysis, and in some tumors, but the platelet count is mostly below 500. The following diseases should be excluded: primary thrombocytosis: treatment: platelet clearance; Oral or intravenous injection of radioactive P32; Chemotherapy. Secondary (reactive) thrombocytosis: The most common causes are bleeding, tissue inflammation and necrosis, malignant tumor, iron deficiency, splenectomy, Chuanqi disease and so on. Diagnosis and treatment of Chuanqi disease: Diagnostic criteria: In addition to the increase of platelets, there are: fever for more than 5 days; Bilateral conjunctival congestion; Grass plum tongue, chapped lips; Rash; Cervical lymph node enlargement and high platelet can be caused by many conditions. Generally, physiological normal people have a change of 6%- 10% a day, which is lower in the morning, slightly higher in the afternoon, lower in the spring and slightly higher in the winter, higher in the plateau area, higher after menstruation and higher after exercise. Pathological myeloproliferative diseases, primary thrombocytosis, acute hemolysis and acute suppurative infection, you should pay attention to them first, and then check them in turn later. If they are still high, you should find out how they are caused. People's inflammatory reaction under the action of an inflammatory factor can lead to the increase of platelets, while other values are normal. The normal platelet content of people is100-300 *10 9/L. People who are slightly higher than the normal value will generally have no problem if other values are normal and asymptomatic. Platelets are only involved in coagulation, so higher values will increase the possibility of thrombosis. Platelets Thrombocytosis occurs at 400 x109/L. Primary thrombocytosis is common in myeloproliferative diseases, such as chronic myeloid leukemia, polycythemia vera and primary thrombocytosis. Reactive thrombocytosis is common in patients with acute and chronic inflammation, iron deficiency anemia and cancer, and the increase is generally less than 500×109/L. After treatment, the situation improves and the number of platelets will soon drop to the normal level.