Hygienically Packed Blood Collection Tube binds calcium ions thus blocking coagulation cascade and preventing clotting of blood. The Blood Collection Tube does not affect the count and size of the leukocyte and keeps erythrocyte unchanged. The Blood Collection Tube is hygienically packed in order to maintain quality and ensure safe transportation. Hygienically Packed Blood Collection Tube comes in the size of 13 X 75mm / 13 X 100mm.