https://en.gongdong.com/products/heparin-tube/ Green Tube Heparin Golden VacTM heparin gel tube is used for drawing heparinized plasma or whole blood for emergency biochemical and hemorheological tests. The Heparin Tube is Plasma Blood Collection Tube. Description of Heparin Collection Tube 01 Available in lithium heparin and sodium heparin for blood collection. 02 The anticoagulant heparin activates antithrombin, which blocks the clotting cascade and thus produces a whole blood/plasma sample. 03 Lithium heparin has no interference with all ion detection during testing, including sodiumion.