A vacutainer blood collection tube is a sterile glass or plastic test tube with a colored rubber stopper that seals the tube internally to create a vacuum that makes it easier to draw a certain amount of liquid.
For specific hematology examinations, including red cell fragility tests and a number of specialty chemistry tests, blood collection tubes containing heparin, which stabilizes the red blood cell membranes, are employed. For coagulation tests, sodium citrate-filled blood collection tubes are employed.
A sterile test tube made of glass or plastic with a colored rubber or plastic cap is called a Blood Collection Tubes Market. This cap creates a vacuum inside the tube, making it possible to draw a specific amount of blood.
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