Platelet aggregation is one of the main functions of platelets, which are the smallest blood cells in the blood, accounting for 0.3% of the blood, and are one of the important components of blood. It maintains the integrity of the capillary wall in addition to accelerating coagulation. After endothelial damage, platelets will adhere to each other to produce aggregation reaction, this reaction plays an important role in physiological hemostasis and arterial thrombosis. Malignant tumors enhance platelet aggregation. Then what are the examination items of platelet aggregation enhancement? The following is to explain it to you. Examination of increased platelet aggregation 1, clinical manifestations: signs and symptoms caused by bleeding and thrombosis, splenomegaly. Platelet count: >1000×109/L. Platelet aggregation in blood film is heaped, and there may be giant platelets. Bone marrow hyperplasia is active and above, megakaryocytes are increased, large and cytoplasmic. Secondary thrombocytosis and other myeloproliferative diseases should be excluded. 2.Laboratory tests Blood picture. Bone marrow: active proliferation and above, megakaryocytosis. Platelet aggregation test. Neutrophil alkaline phosphatase stain (NAP). Malignant tumors enhance platelet aggregation. It is recommended that patients pay attention to the cancer signals of common malignant tumors to take the initiative to go to the hospital for systematic examination in time, which is conducive to the early detection, early diagnosis and early treatment of malignant tumors, so as to avoid delaying the condition and causing serious consequences.