Guidance / By KS Medical 8 Colors of Blood Collection TubesREDNo Additive TubeYellow/GoldSST - Serum Separator TubeLavender PurpleEDTA TubeBlackESR TubeOrangeClot Activator TubeGreenHeparin TubeBlueSodium Citrate - PT TubeGreyGlucose Tube View Product List