The inner wall of the blood collection tube is uniformly sprayed with coagulant, when the blood sample coming into the tube, which is fully contacted with coagulant, thereby achieving complete coagulation of the blood in a short time, and high-quality serum can be obtained by centrifugation,which can solve the problem of coagulation, hemolysis and coagulation for blood cells.

It can be used to collect and reserve blood specimens in medical tests for biochemistry and Immunology.