sclerosed vein
Medical term Routine Blood Collections
A hardened, cordlike vein, often from damage or clotting; it does not spring back when pressed and is not used for venipuncture.
Related terms
- veinA vessel that carries blood back toward the heart under low pressure. Superficial arm veins are the usual…
- venipunctureEntering a vein with a needle to withdraw blood, usually at the antecubital area of the arm.
- pulseThe throb of an artery with each heartbeat. A pulse under the fingertip means an artery is there; do not…
- refluxBackflow of tube contents into the vein; keeping the arm angled downward while tubes fill prevents it.
- Rh factorRed-cell antigen tested with the ABO type: people who have it are Rh-positive; those who lack it are…
- rolling veinA vein that slides away from the needle; anchoring the skin taut below the site holds it in place.
- serumThe liquid left after blood clots and is centrifuged; it lacks the clotting factors used up in the clot…
- serum separator tubeGold or red-gray (tiger) top. Its clot activator speeds clotting; when the tube is spun, its gel moves to…
- small-volume tubeStandard-size tube with a weaker vacuum that draws less blood; used for children and fragile veins to reduce…
- sodium citrateAnticoagulant that binds calcium, used in light blue-top tubes for coagulation tests. Fill to the line to…