Phlecocuum blood collection tubes have a sterile interior. Phlecocuum Tubes are sterilized by gamma radiation,tubes are irradiated to achieve sterility.

These tubes are sterile on the interior only. We cannot recommend re-sterilizing the tubes, i.e., ETO (ethylene oxide) or autoclaving, primarily due to pressure changes that take place during the re-sterilization cycle.

Our tubes are under a specific negative pressure. During the re-sterilization cycle this negative pressure may be disrupted and therefore the tubes may not draw the proper blood volume.