Routine Blood Collections, question 5A physician office patient has orders for an aPTT (light blue-top) and a hemoglobin A1c (lavender-top). The phlebotomist uses a straight…
Related terms
systolic pressureThe upper blood pressure number: the peak pressure in the arteries while the ventricles contract.
thrombinClotting enzyme that turns fibrinogen into fibrin. Orange-top tubes use a thrombin-based clot activator to…
thrombusA blood clot formed inside a vessel. A thrombosed vein feels hard or cordlike and is not used for…
tourniquetBand tied 7 to 10 cm (3 to 4 in, about 4 to 5 finger widths) above the site to slow venous return so veins…
vasovagal reactionReflex slowing of the heart and drop in blood pressure: pale, sweaty, nauseated or dizzy, sometimes…
veinA vessel that carries blood back toward the heart under low pressure. Superficial arm veins are the usual…
vein finderA transilluminator or similar device that lights up veins under the skin to help locate a hard-to-find vein.
venipunctureEntering a vein with a needle to withdraw blood, usually at the antecubital area of the arm.