In hospitals, different test items have different requirements for blood samples, including whole blood, serum and plasma. This requires different blood collection tubes to match it. The vacuum blood collection tube is preset with a certain amount of negative pressure during the production process, and various additives are preset in the blood collection tube, and the ratio of the additive to the blood sample is accurate. The tube caps are marked with different color codes, which are suitable for different inspection items. The vacuum test tube is airtight.
Desheng blood collection tube additive series products
Vacuum blood collection tubes are test tubes with graduated, red, purple, blue, black, green and other color caps. Each color has different additives and different effects.
Red cap tube: The tube contains separation gel and coagulant. The function of the separation gel is to form a barrier after centrifugation, which separates blood cells and serum and prevents the release of intracellular components into the serum. It becomes insoluble fibrin aggregates, and then forms a stable fibrin clot.
Purple cap tube: The anticoagulation mechanism of the tube containing dipotassium ethylenediaminetetraacetic acid is that EDTA-2K chelates calcium ions in the blood sample, blocking and terminating the endogenous or exogenous coagulation process. This prevents the blood specimen from clotting. Because EDTA-2K can effectively protect the morphology of blood cells and platelets. Therefore, it is suitable for general blood cell counting and classification, that is, routine blood testing, and it is also suitable for the collection of blood samples for blood bank matching.
Blue cap tube: The tube contains 3.2% sodium citrate. Sodium citrate acts as an anticoagulant by overlapping with calcium ions in the blood sample. The ratio of anticoagulant to blood is 1:9. It is mainly used in the fibrinolytic system ( Prothrombin time, thrombin time, activated partial thrombin time, fibrin), D-dimer determination, etc.
Black cap tube: The tube contains 3.8% sodium citrate. The ratio of anticoagulant to blood is 1:4 and is generally used for erythrocyte sedimentation rate testing.
Green cap tube: Heparin is added to the blood collection tube. Heparin directly has the effect of antithrombin, which can prolong the clotting time of specimens. It is suitable for red blood cell fragility test, blood gas analysis, hematocrit test, hemorheology test, etc. It is also suitable for sample collection of general enzyme immunity projects.
Desheng company specializes in the production of blood collection tube additives. It has been more than ten years since the establishment of the company. The main products produced and operated include: serum separation gel, heparin sodium, heparin lithium, EDTA dipotassium/tripotassium, coagulant, accelerator Condensed powder and other products, has a professional team to manage R&D and production. If you are interested in Desun’s products, you can enter the company’s official website to contact customer service for more information.