Phlebotomy Tubes Quiz Questions

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Phlebotomy Tubes Quiz Questions - Quiz

Phlebotomy is known in medicine as the process of using a needle in order to make an incision in a vein, but there’s a lot more to it than that – namely, knowing when to use the right tube!


Questions and Answers
  • 1. 

    Which of the following tubes contain anticoagulant? 

    • A.

      Light Blue

    • B.

      Red

    • C.

      Gold

    • D.

      Tiger Top

    • E.

      Green

    • F.

      Lavender

    • G.

      Pink

    • H.

      Gray

    Correct Answer(s)
    A. Light Blue
    E. Green
    F. Lavender
    G. Pink
    H. Gray
    Explanation
    The tubes that contain anticoagulant are Light Blue, Green, Lavender, Pink, and Gray. Anticoagulants are substances that prevent blood from clotting, and they are added to tubes used for blood collection to preserve the integrity of the sample. Light Blue tubes typically contain sodium citrate as an anticoagulant, while Green tubes contain heparin. Lavender tubes contain EDTA, Pink tubes contain potassium EDTA, and Gray tubes contain sodium fluoride and potassium oxalate, all of which act as anticoagulants.

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  • 2. 

    Mint green tubes can contain either lithium heparin or sodium heparin. 

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    The statement is true because mint green tubes can indeed contain either lithium heparin or sodium heparin. Mint green tubes are commonly used in medical laboratories for collecting blood samples. These tubes are coated with either lithium heparin or sodium heparin, which are anticoagulants used to prevent the blood from clotting. The choice between lithium heparin or sodium heparin depends on the specific requirements of the laboratory or the tests being conducted. Therefore, it is correct to say that mint green tubes can contain either lithium heparin or sodium heparin.

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  • 3. 

    What is the chemical symbol for sodium?

    • A.

      So

    • B.

      Na

    • C.

      K

    • D.

      S

    Correct Answer
    B. Na
    Explanation
    The chemical symbol for sodium is Na.

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  • 4. 

    What is the chemical symbol for potassium?

    • A.

      P

    • B.

      Po

    • C.

      K

    Correct Answer
    C. K
    Explanation
    The chemical symbol for potassium is K.

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  • 5. 

    What does SST stand for?

    • A.

      Standard Separator Tube

    • B.

      Sodium Separator Tube

    • C.

      Serum Separator Tube

    Correct Answer
    C. Serum Separator Tube
    Explanation
    The correct answer is Serum Separator Tube. SST stands for Serum Separator Tube, which is a type of blood collection tube used in medical laboratories. This tube contains a gel that separates the serum from the blood cells, allowing for easier analysis and testing. The serum can be used to measure various components such as glucose, cholesterol, and liver function markers.

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  • 6. 

    Which of these are SSTs?

    • A.

      Gold

    • B.

      Green

    • C.

      Gray

    • D.

      Tiger Top

    Correct Answer(s)
    A. Gold
    D. Tiger Top
    Explanation
    Gold and Tiger Top are the SSTs (Surface Sea Temperature) because gold is a color associated with warm temperatures and Tiger Top is likely a reference to a tiger print or pattern, which could be indicative of warm climates. Green and Gray are not typically associated with warm temperatures.

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  • 7. 

    Which of the following is the correct order of draw?

    • A.

      1. gray 2. red 3. SST/gold/tiger 4.green 5. light blue 6. lavender/pink 7. blood culture

    • B.

      1. blood culture 2. light blue 3. red 4. SST/gold/tiger 5. green 6. lavender/pink 7. gray

    • C.

      1. blood culture 2. light blue 3. SST/gold/tiger 4. red 5. green 6. light blue 7. gray

    • D.

      1. blood culture 2. green 3. light blue 4. red 5. SST/gold/tiger6. lavender/pink 7. gray

    Correct Answer
    B. 1. blood culture 2. light blue 3. red 4. SST/gold/tiger 5. green 6. lavender/pink 7. gray
    Explanation
    The correct order of draw is important in order to prevent cross-contamination and ensure accurate test results. Blood culture bottles should always be drawn first to minimize the risk of contamination. Light blue tubes are used for coagulation studies and should be drawn second. Red tubes are used for various tests including blood chemistry and serology, and should be drawn third. SST/gold/tiger tubes are used for chemistry tests and should be drawn fourth. Green tubes are used for tests requiring plasma or whole blood and should be drawn fifth. Lavender/pink tubes are used for hematology tests and should be drawn sixth. Gray tubes are used for glucose testing and should be drawn last.

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  • 8. 

    When a blood specimen is centrifuged (spun), the solid portion at the bottom of the tube is made up mainly of: 

    • A.

      RBCs

    • B.

      Plasma

    • C.

      Serum

    • D.

      Whole blood

    Correct Answer
    A. RBCs
    Explanation
    RBCs, or red blood cells, are the solid at the bottom. Whole blood is the mixture you might start with, but you can't have whole blood AFTER centrifuging. Plasma and serum are both liquid and would be at the top.

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  • 9. 

    When spun, the liquid portion of tubes with anticoagulant will be PLASMA. In tubes with NO anticoagulant, when spun the liquid portion will be SERUM. 

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    When tubes with anticoagulant are spun, the anticoagulant prevents the blood from clotting, allowing the liquid portion to separate into plasma. On the other hand, tubes without anticoagulant allow the blood to clot, resulting in the separation of the liquid portion into serum. Therefore, the statement is true.

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  • 10. 

    Clotting factor in tubes PREVENTS blood from clotting, so you will have whole blood.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    FALSE - clotting factor HELPS blood to clot (coagulate). Blood will also clot without clotting factors, though at a much slower rate.

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