blue cap vacum sodium citrate tube 1.8 ml size

1. Plain blood collection tube:     cap color: red     additive: none     specimen: serum     tube material: PET or Glass     size: 13*75, 13*100     clinic usage: biochemistry test, immunity test, and radioimmunoassay test; 2.EDTA tube:     cap color: purple     additive: EDTA-K2/K3     specimen: whole blood     tube material: PET or Glass     size: 13*75, 13*100     application: hemanalysis includes blood routine test, fibrin, blood corpuscle, blood ammonia, troponin, platelet determination, and blood grouping test, cross matching; 3. Heparin tube:;     cap color: green     additive: sodium heparin     specimen: plasma     tube material: PET or Glass     size: 13*75, 13*100     application: hemorheology, blood biochemistry, hematocrit, and blood gas analysis for arterial  blood;