FREE AND STUDY GAMES ABOUT ADDITIVES IN TUBES

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FREE AND STUDY GAMES ABOUT ADDITIVES IN TUBES

EXAM QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -40 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation Question 1: Give a reason why your 6th choice ( for order of draw) comes after the tube you listed as 5th on the order of draw.

Answer:

Because potassium oxalate damages the cell membrane of the red blood cell.Question 2: Identify the tube that would be used when taking blood for toxicology and nutrient determinations, and explain why this tube is used for these tests

Answer:

Royal/dark blue stopper The tubes are trace element free Question 3: How many times do we invert the tubes to ensure the blood and additive is adequately mixed?

Answer:

? 6-8 times

Question 4: Name the tube that is known to cause more " carry over" problems than any other tube

Answer:

EDTA tube Question 5: Which anticoagulant prevents coagulation by inhibiting thrombin formation

Answer:

Lithium Heparin

Question 6: To which department will a grey top tube go for analysis.

Answer:

Chemistry

Question 7: Give the reason why EDTA are drawn after SST

Answer:

Elevates Na ( esp with sod EDTA) and K levels chelates and decreases calcium and iron levels Question 8: Give the additives to the following blood collection tubes and explain how each

additive works:

Grey top tube

Answer:

? Sodium fluoride acts as antiglycolytic (preserves the glucose for up to 3 days) ? Potassium oxalate is an anticoagulant that binds with the calcium in the blood to prevent the coagulation cascade

Question 9: Give the reason why SST are drawn after citrate tubes

Answer:

Fill after coagulation tests because silica particles activate clotting and affect coagulation tests.

Question 10: Describe the function of the additives in the SST

Answer:

Gel separates the clot from the serum. Preventing analytes which may leak out of the cells in the clot going into the serum and causing erroneous results. the clot activator enhances the clotting time

Question 11: Give the additives to the following blood collection tubes and explain how each

additive works:

Green top tube

Answer:

? Sodium or lithium heparin- it is an anticoagulant ? Prevents coagulation by inhibiting thrombin in the coagulation cascade

Question 12: Identify the additive in a tube with a green stopper.

Answer:

It indicates that there is heparin in the tube. It may be lithium or sodium heparin Question 13: In the order of draw, the tube drawn after the heparin tubes is the:

Answer:

EDTA Question 14: Give 2 reasons why a light green top tube is an excellent choice for a stat (urgent) potassium?

Answer:

The blood does not need to clot - time is not wasted. ..The heparin does not interfere with the results.The gel prevents potassium leakage from the red blood cells into the plasma.Question 15: A blood sodium level may be taken using a green top tube containing sodium heparin. True or false? Give a reason for your answer

Answer:

? False ? The sodium in the additive may falsely elevate the blood sodium result.Question 16: Give the additives to the following blood collection tubes and explain how each

additive works:

Yellow top tube

Answer:

? Acid citrate dextrose ? Binds with the calcium in the blood to prevent coagulation cascade

Question 17: List the correct order of draw for the closed system.

Answer:

Blood culture...sodium citrate/ light blue...red/gold/tube with or without additives-with and without gel.Heparin... EDTA...Grey...ACD

Question 18: What is the purpose of the royal blue topped tube?

Answer:

Minimise trace element contamination.Question 19: The purpose of the tube additive sodium fluoride is to:

Answer:

Preserve the glucose.

Question 20: To which department will a gold top tube go for analysis?

Answer:

Chemistry/serology

Question 21: What colour is the top of an ACD ( acid citrate dextrose) tube.

Answer:

Yellow Question 22: Give the additives to the following blood collection tubes and explain how each

additive works:

Lavender top tube

Answer:

? EDTA

? Calcium in blood binds with the EDTA preventing the coagulation cascade

Question 23: What tube contain no additives and is used as discard tube?

Answer:

Clear stopper/ or red and grey dappled stopper

Question 24: Identify the additives in a serum separator tube.

Answer:

Thixotropic Gel , clot activator