EDTA – K2 anticoagulant tube
The edta tube contains ethylenediamine tetraacetic acid and its salt (EDTA -). It is an amino polycarboxylic acid, which can effectively chelate calcium ions in the blood. Chelation will remove calcium from the reaction point, prevent and terminate endogenous or exogenous coagulation process, so as to prevent blood coagulation. Compared with other anticoagulants, it has little effect on blood cell agglutination and blood cell morphology, Therefore, EDTA salts (2k, 3k, 2Na) are usually used as anticoagulants. It is used for general hematological examination such as blood cell count and classification, but not for coagulation, trace elements and PCR.
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