medical plain vacuum blood collection tube edta k2 k3 blood collection vacuum tube other medical consumables vacutainer bloodcollection tubeBlood Collection Tube is made of selected plastic material. The inner wall of the test tube is silicified to make it smooth andfree from blood. The serum is separated thoroughly with separation glue, and there is no fibrin filament in the serum.We produce Vacuum or Non Vacuum Blood Collection Tube,Micro Blood Collection Tube;Serum Blood Collection Tube,Plasma Blood Draw Tube,Whole Blood Blood Collection Tube.It is used to collect blood samples for clinical plasma, emergency biochemistry and hemorheology