Question

180 Unit lIl: Blood Collection 18. The best way to keep a vein from rolling is a. insert the needle at a 45-degree angle. b. make certain to anchor it well. c. tie the tourniquet very tight. d. use a large-diameter needle. hemolyzed specimen 14. The serum or plasma of a would most likely look: a cloudy or turbid. c. pinkish to red. b. pale yellow d. yellowish brown. 15. Underfilling this tube will most likely result in a 19. You insert the needle in a patient's arm and hemolyzed specimen. Gray top a. EDTA tube b. Light-blue top prop erly engage the tube. No blood flows into the toh You make subtle needle adjustments and there is still no blood flow. Which of the following is the best thing to do next a. Discontinue the draw and try somewhere else b. Keep redirecting the needle until you hit a vein. c. Lift up on the needle to create a steeper angle d. Try a new tube in case it is a vacuum problem d. SST 16. Which activity can contaminate a blood specimen and affect the testing performed on it? a. Cleaning the site with alcohol before drawing an ETOH specimen. iodine is totally dry. a finger puncture on the specimen. b. Collecting blood cultures before the povidone- c. Using povidone-iodine to clean the site prior to 20. Which of the following is the most likely to affect test results? a. Edema d. All of the above activities can affect testing done c. Reflux d. Syncope b. Petechiae 17. Which activity is least likely to lead to failure to draw blood a. Choosing a vein that has patency b. Leaving the tourniquet on too long c. Loosely anchoring the vein d. Using a tube that was dropped

Answer 1

Ans. 15:-B light blue top.

Underfilling of tubes containing anticoagulant results in a higher than recommanded consentration of the additive,which promotes hemolysis.