A Venous Blood Collection Tube is a sterilized glass tube with a colored rubber stopper that seals the vacuum inside the tube; thereby simplifying the drawing of a programmed volume of liquid. Venous blood collection tubes may comprise flavors intended to steady and reserve the specimen prior to analytical testing. Tubes are accessible with a safety-engineered closure (rubber stopper), with a variability of labeling selections and stopper colors as well as a variety of draw volumes. More
