sodium citrate

Medical term Phlebotomy

The anticoagulant in light blue tubes, used for coagulation tests such as PT/INR; the tube must be filled to the line.

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Free practice questions that use sodium citrate

Phlebotomy, question 3Which additive prevents clotting by inhibiting thrombin rather than by binding calcium?

anticoagulantA substance that prevents blood from clotting, such as heparin, EDTA or sodium citrate in tubes, or warfarin…
coagulationFormation of a blood clot.
INRInternational normalized ratio: a standardized way of reporting the prothrombin time.
phlebotomyThe practice of drawing blood from a vein, usually for laboratory testing.
plasmaThe liquid part of blood, mostly water, that carries blood cells and dissolved substances.
serumThe liquid left after blood clots; plasma without clotting factors.
serum separator tubeA gold or red-gray (tiger top) tube with clot activator and a gel that separates serum from cells during…
tourniquetA band tied around the arm to slow venous blood flow so veins are easier to find and puncture.
vasovagal reactionA reaction with pallor, sweating, dizziness, nausea and sometimes fainting, which can occur during blood…
venipuncturePuncturing a vein with a needle to collect blood.