The application of EDTA dipotassium in blood collection anticoagulants has many advantages, as it can effectively prevent blood clotting, maintain the stability and fluidity of blood samples, and ensure accurate and reliable sampling. And it is very useful for the study of cell morphology and staining, which can maintain the morphological structure of cells and tissues, reduce changes and damage in cell morphology, and have minimal impact on certain biochemical indicators. It can be used for various biochemical tests in clinical and laboratory studies. EDTA potassium is widely used in blood collection and preservation in clinical medicine and laboratory research. Blood samples treated with anticoagulation will appear in various blood samples such as routine blood testing, biochemical analysis, blood type identification, and cell counting. In addition, EDTA dipotassium is commonly used in biological research such as cell culture, apoptosis detection, and DNA extraction to ensure that the sample does not interfere with experimental measurements.