Wiktionary
n. (context medicine English) A collection tube, with an internal vacuum, used to draw blood samples
Wikipedia
A Vacutainer blood collection tube is a sterile glass or plastic tube with a closure that is evacuated to create a vacuum inside the tube facilitating the draw of a predetermined volume of liquid. Most commonly used to collect blood samples in venipuncture, they are also used as urine collection tubes and as serum separator tubes. Vacutainer tubes may contain additives designed to stabilize and preserve the specimen prior to analytical testing. Tubes are available with or without a safety-engineered closure, with a variety of labeling options and closure colors as well as a range of draw volumes.
Vacutainer tubes were invented by Joseph Kleiner and Becton Dickinson in 1949. Vacutainer is a registered trademark of Becton Dickinson, which manufactures and sells the tubes today.
Usage examples of "vacutainer".
There were two little vials of blood already on the ground beside Denise's feet, and as I watched, she fixed a new Vacutainer to the needle.
After a glance, Denise set about getting the third Vacutainer plugged.