Disposable Green Cap Vacuum Sodium Heparin tube lithium Heparin tube is made of selected plastic material. The inner wall of the test tube is silicified to make it smooth and free from blood. The serum is separated thoroughly with separation glue, and there is no fibrin filament in the serum. Spec:Gel+clot activator tube,plain tube ,no additive tube, clot activator,tube,sodium heparin tube,lithium heparin tube,pt tube,3.2% sodium citrate tube,edta k3 tube,edta k2 tube,edta tube,ESR tube,3.8% sodium citrate tube,glucose tube sodium fluride tube,fluoride tube