A coagulant, also known as a suspension agent, is an additive commonly used in blood collection. The following is a detailed introduction to the suspension information of coagulants: Product form: The coagulant is a white suspended liquid with a faint organic solvent odor, non-toxic and harmless. Main ingredients: Blood coagulants are composed of thrombin, alcohol, silica powder, emulsifiers, surfactants, etc. Performance characteristics: It has the function of quickly promoting blood solid reduction. It has no impact on clinical biochemical testing. Procoagulation principle: Procoagulants can activate some coagulation factors in plasma and platelets, promote the formation of thrombin and fibrin clots, accelerate the contraction of blood cell clots, and thus achieve the goal of rapid separation of serum. Scope of application: Blood coagulants can be used to make vacuum and injection type blood collection tubes, which can be applied in clinical medical laboratory work. Laboratory personnel can complete operations such as taking blood samples, quickly separating serum, and transferring samples in the same vessel.