Golden Vac plasma blood collection tube promises to provide non-polluting and non-differential original blood specimen for medical test. After centrifugation,Ã?? plasma can be separated from blood cells effectively. Plasma tube includes 5 kinds of tubes: Clotting Tube with blue cap, Heparin Tube and Gel & Heparin Tube with green cap, Compound of Sodium Fluoride and Anticoagulant Tube with grey cap, Gel& EDTA Tube with lavender cap. HEPARIN TUBE Heparin Tube aims to obtain plasma specimen, which is used not only for emergency biochemistry tests but also for blood rheology test. Inside the tube wall, where is well sprayed with lithium heparin or sodium heparin which is a kind of anticoagulant activating antithrombins to block the coagulation cascade reaction. Item GD030SH, Specification Green cap, Heparin Sodium, 13*75mm, 3ml Item GD040SH, Specification Green cap, Heparin Sodium, 13*75mm, 4ml Item GD050SH, Specification Green cap, Heparin Sodium, 13*75mm, 5ml Item GD060SH, Specification Green cap, Heparin Sodium, 13*100mm, 6ml Item GD070SH, Specification Green cap, Heparin Sodium, 13*100mm, 7ml Item GD0100SH, Specification Green cap, Heparin Sodium, 16*100mm, 10ml Item GD0100SHR, Specification Rubber stopper, Heparin Sodium, 16*100mm, 10ml Item GD030LH, Specification Green cap, Heparin Lithium, 13*75mm, 3ml Item GD040LH, Specification Green cap, Heparin Lithium, 13*75mm, 4ml Item GD050LH, Specification Green cap, Heparin Lithium, 13*75mm, 5ml Item GD060LH, Specification Green cap, Heparin Lithium, 13*100mm, 6ml Item GD070LH, Specification Green cap, Heparin Lithium, 13*100mm, 7ml Item GD0100LH, Specification Green cap, Heparin Lithium, 16*100mm, 10ml Item GD0100LHR, Specification Rubber stopper, Heparin Lithium, 16*100mm, 10ml