Designed for testing of trace elements such as aluminum, lead, cadmium, chrome, iron, fluoride, cobalt, copper, lithium, manganese, molybdenum, mercury, selenium or thalium
Contains sodium heparin to activate antithrombins, thus blocking the coagulation cascade and producing a whole blood/ plasma sample instead of clotted blood plus serum
Manufactured from virtually unbreakable clear PET plastic
Royal blue non-ridged pull caps with black exterior ring