These tubes are coated with EDTA-K2 for blocking coagulation cascade by binding calcium ions in the blood sample. EDTA tubes should be inverted 8-10 times to assure complete mixing with blood. EDTA K2 tubes are used for direct sampling analysis since erythrocytes, leucocytes and thrombocytes are stable in EDTA anti coagulated blood for 24 hours. Blood smearing should be done with in 3 hours after blood collection.
Used in Routine hematology tests including Hemoglobin and Hemotocrit, WBC count, RBC count Platelet count, complete blood count and Hb A1C etc.