Platelet satellite phenomenon refers to the fact that when EDTA-2K (dipotassium ethylenediaminetetraacetate) is used for anticoagulation of the patient’s blood, platelets can be seen in clusters in the patient’s blood smear, and sometimes platelets can be seen surrounding the neutrophils as if they were satellites circling around the earth, which is why it is known as the “Platelet Satellite Phenomenon. Therefore, it is called “platelet satellite phenomenon”. 1. Platelet satellite phenomenon is mainly seen in the laboratory, hematology and other departments of a phenomenon. Clinically, the appearance of platelet satellite phenomenon may be seen in anticoagulation problems or blood placed for too short a period of time and so on. 2. Platelet satellite phenomenon is a cause of low platelet count. Platelet detection by routine blood test instrument is based on the principle of electrical impedance, and the passage of individual platelets through the detection channel will cause a change in the current, which will lead to counting. Platelet satellites cause platelets to adhere to the surface of neutrophils, preventing individual platelets from passing through the test channel, resulting in a lower platelet count than the patient’s original platelet count.