No additive tube is used in
blood collection and storage for biochemistry, immunology, serology, test of
various kinds of virus and microelement in medical inspection. With special
treatment on the inner surface, it's extremely smooth for normal activity of
thrombocyte and unhindered clotting, which prevents hemolysis or adhesion of
blood corpuscle or fibrin to the inner surface. It can provide enough
pollution-free serum samples for clinical test, and maintain the normal
compositions of serum for a long time. Moreover, it's helpful to serum
reinspection with good repeatability.