There is a negative pressure effect in the blood collection tube. When the blood collection needle is punctured into the blood vessel, the blood can actively flow into the micro blood collection tube. Various additives are preset in the blood collection tube, which can satisfy multiple clinical blood tests. Brings great convenience in medical testing. There are many additives for blood collection tubes. Today we will mainly understand what are the characteristics of the anticoagulants in blood collection tubes-heparin sodium, heparin lithium, and EDTA.
1. Blood collection tubes containing heparin sodium or heparin lithium:
Heparin is a kind of mucopolysaccharide with sulfate group, with strong negative charge, it has the effect of strengthening antithrombin Ⅲ to inactivate serine protease, then hindering the formation of thrombin, and hindering the aggregation of platelets and other anticoagulants. effect. Heparin tubes are generally used for emergency biochemical and blood rheological testing, and are the best choice for electrolyte testing. However, it should be noted that heparin sodium should not be used when checking sodium ions in blood samples to avoid affecting the test results. Nor can it be used for white blood cell counting and classification, because heparin will cause white blood cell collection.
2. Blood collection tubes containing ethylenediaminetetraacetic acid (EDTA): ethylenediaminetetraacetic acid is an amino polycarboxylic acid that can effectively chelate calcium ions in the blood. Chelating calcium will remove calcium from the reaction point. It will hinder and stop the endogenous or exogenous coagulation process, and then avoid blood coagulation. Compared with other anticoagulants, it has less effect on the coagulation of blood cells and the shape of blood cells, so EDTA (2K, 3K, 2Na) as an anticoagulant.
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 Desheng's products, you can enter the company's official website to contact customer service for more information.