Phlebotomy Tube Colors And Additives

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  • 1/49 Questions

    Choose the correct order of draw.

    • PST, SST, Red-non additive, Grey, PPT
    • Orange, Red, Royal Blue, Light Green
    • Yellow, Red-clot activator, PST, SST, Pink
    • Red-non additive, PST, Gray, SST
    • Yellow, SST, Light Green, PPT, Gray
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Phlebotomy Essentials Quizzes & Trivia
About This Quiz

When it comes to the medical lab there are different tests being carried out and therefore tubes are colored differently to differentiate them based on what they contain. The quiz below comes from Phlebotomy Essentials 4th Edition and my instructor's lecturing and is designed to help you see how much you understand on phlebotomy tube colors and additives. Give it See morea try!

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  • 2. 

    SST tubes can be these colors: ________ and ________.

    • Red and gray

    • Red & black and gold

    • Red & black and yellow

    • Orange and lavendar

    • Gray and green

    Correct Answer
    A. Red & black and gold
    Explanation
    The correct answer is red & black and gold. This is because SST tubes, which are used for blood collection and testing, are commonly available in these colors. The red & black color indicates that the tube contains a clot activator and gel separator, while the gold color indicates that it contains a gel separator and clot activator. These additives help in separating the serum from the blood cells, making it easier for testing and analysis.

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  • 3. 

    Yellow (Sterile) tubes contain which of the following?

    • Sodium Citrate

    • Thrombin

    • SPS

    Correct Answer
    A. SPS
    Explanation
    Yellow (Sterile) tubes contain SPS, which stands for Sodium Polyanethol Sulfonate. SPS is an anticoagulant used for blood culture collection. It helps in preventing the clotting of blood by binding to calcium ions. This allows the blood to remain in a liquid state so that it can be used for microbiological testing, such as culturing bacteria or fungi. SPS also has antimicrobial properties that help in inhibiting the growth of bacteria during transportation and storage of the blood sample.

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  • 4. 

    Which comes first?

    • Red-clot activator

    • Red-non additive

    Correct Answer
    A. Red-non additive
    Explanation
    The correct answer is "Red-non additive". This is because non-additive additives are typically added to blood collection tubes before clot activators. Non-additive tubes are used for tests that require whole blood or plasma without any additives, whereas clot activators are used to promote blood clotting for tests that require serum. Therefore, the non-additive tubes would come first in the order of blood collection.

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  • 5. 

    In what tube will you find ACD?

    • Gold

    • Orange

    • Yellow

    • Gray

    Correct Answer
    A. Yellow
    Explanation
    ACD stands for Acid-Citrate-Dextrose, which is an anticoagulant used in blood collection tubes to prevent clotting. Among the given options, the tube that commonly contains ACD is the Yellow tube.

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  • 6. 

    Sodium citrate is found in what tube?

    • Gray

    • Pink

    • Green

    • Light blue

    Correct Answer
    A. Light blue
    Explanation
    Sodium citrate is commonly used as an anticoagulant in blood collection tubes. Light blue tubes are specifically designed for coagulation testing, as the sodium citrate prevents blood from clotting by binding calcium ions. This allows for accurate measurement of clotting factors and other coagulation parameters. Therefore, the correct answer is light blue.

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  • 7. 

    Sodium citrate is a/an _______.

    • Coagulant

    • Anticoagulant

    • Gel separator

    • Glycolytic

    Correct Answer
    A. Anticoagulant
    Explanation
    Sodium citrate is classified as an anticoagulant. Anticoagulants are substances that prevent blood from clotting by inhibiting the formation of blood clots. Sodium citrate is commonly used as an anticoagulant in blood collection tubes to maintain the integrity of the blood sample by preventing clotting. It works by binding to calcium ions in the blood, which are necessary for the clotting process, thus preventing the blood from coagulating.

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  • 8. 

    With STAT tests, a rapid-acting clot activator that can be used is called _________.

    • EDTA

    • PPT

    • Oxalate

    • Thrombin

    Correct Answer
    A. Thrombin
    Explanation
    Thrombin is a rapid-acting clot activator that can be used in STAT tests. It helps in the conversion of fibrinogen to fibrin, which is essential for the formation of blood clots. This clotting process is important for various diagnostic tests, such as coagulation studies or assessing platelet function. Thrombin acts quickly, making it suitable for rapid testing situations where immediate clot formation is required. EDTA, PPT, and Oxalate are not clot activators and do not serve the same purpose as thrombin in STAT tests.

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  • 9. 

    A clot activator that yields _______ in a green tube is called ________.

    • Plasma, serum

    • Heparin (sodium or lithium), serum

    • Serum, plasma

    • Plasma, heparin (sodium or lithium)

    Correct Answer
    A. Plasma, heparin (sodium or lithium)
    Explanation
    A clot activator that yields plasma in a green tube is called heparin (sodium or lithium). This means that when blood is collected in a green tube containing heparin (sodium or lithium) as a clot activator, it will prevent the blood from clotting and allow the separation of plasma from the other components of blood. Therefore, the correct answer is plasma, heparin (sodium or lithium).

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  • 10. 

    An anticoagulant found in glucose-collecting tubes is called ________.

    • Sodium fluoride and potassium oxalate

    • Sodium citrate and potassium oxalate

    • Potassium oxalate and acid citrate dextrose

    • Sodium fluoride

    Correct Answer
    A. Sodium fluoride and potassium oxalate
    Explanation
    Sodium fluoride and potassium oxalate are anticoagulants commonly found in glucose-collecting tubes. These substances prevent the blood from clotting by inhibiting the activity of clotting factors. Sodium fluoride helps to preserve glucose levels in the blood by inhibiting the enzymes that break down glucose, while potassium oxalate prevents the formation of clots by chelating calcium ions necessary for clotting. Therefore, the correct answer is sodium fluoride and potassium oxalate.

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  • 11. 

    Correct order of draw.

    • SST, PST, ACD, SPS

    • SPS, SST, PST, EDTA

    • PST, SST, EDTA, SPS

    • EDTA, SST, SPS, PST

    Correct Answer
    A. SPS, SST, PST, EDTA
    Explanation
    The correct order of draw is SPS, SST, PST, EDTA. This order is important in order to prevent cross-contamination of the samples and to ensure accurate test results. SPS (sodium polyanethol sulfonate) tubes are used for blood culture collection to prevent clotting. SST (serum separator tube) is used to collect serum for various tests. PST (plasma separator tube) is used to collect plasma for certain tests. EDTA (ethylenediaminetetraacetic acid) tubes are used for collecting blood for hematology tests.

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  • 12. 

    Sterile tubes have what color tops?

    • Green

    • Light blue

    • Yellow

    • Gold

    Correct Answer
    A. Yellow
    Explanation
    Sterile tubes typically have yellow tops. This color coding helps to easily identify these tubes and differentiate them from other types of tubes used for different purposes. The yellow color indicates that the tube is sterile and suitable for collecting samples that need to be free from any contamination.

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  • 13. 

    If a lithium test is ordered, what color tube should be used?

    • Orange

    • Royal Blue

    • Gray

    • Light Green

    • Pearl

    Correct Answer
    A. Light Green
    Explanation
    A lithium test measures the amount of lithium in a person's blood. Light Green tubes are typically used for tests that require plasma or whole blood, including lithium tests. The color of the tube indicates the type of anticoagulant or additive present in the tube. In this case, the light green tube contains lithium heparin, which is the appropriate additive for a lithium test.

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  • 14. 

    PST stands for:

    • Pressure setting tube

    • Plasma separator tube

    • Preparation sodium tube

    • Plasma serum top

    • Plasma sepsis tube

    Correct Answer
    A. Plasma separator tube
    Explanation
    The correct answer is "plasma separator tube." A plasma separator tube is a type of tube used in medical laboratories to separate plasma from blood samples. It contains an anticoagulant that prevents clotting and a gel separator that helps separate the plasma from the other components of the blood. This allows for the collection of pure plasma for various diagnostic tests.

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  • 15. 

    EDTA is what?

    • A serum yielding substance

    • A plasma-serum yielding substance

    • An anticoagulant, plasma yielding substance

    • An anticoagulant, serum yielding substance

    • A clot activator, plasma yielding substance

    Correct Answer
    A. An anticoagulant, plasma yielding substance
    Explanation
    EDTA stands for ethylenediaminetetraacetic acid. It is commonly used as an anticoagulant in blood collection tubes. It works by binding to calcium ions in the blood, which prevents the blood from clotting. Therefore, EDTA is an anticoagulant. Additionally, it is specifically used to yield plasma, as it prevents the blood from clotting and allows for the separation of plasma from the blood cells. Hence, EDTA is an anticoagulant and a plasma yielding substance.

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  • 16. 

    Lavender tubes contain what?

    • SPS

    • Hair

    • Heparin

    • Plasma

    • EDTA

    Correct Answer
    A. EDTA
    Explanation
    Lavender tubes contain EDTA. EDTA is a commonly used anticoagulant that prevents blood from clotting by binding to calcium ions. It is used for various laboratory tests, such as complete blood count (CBC) and blood typing. The lavender color of the tube is just a visual indicator to differentiate it from other tubes used for different purposes.

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  • 17. 

    PST (plasma separator tube) contains ______, yields _______, and has what color top?

    • Lithium heparin, plasma, green

    • Gel, plasma, green

    • Blood, fat, clear

    • Lithium heparin, serum, green

    Correct Answer
    A. Lithium heparin, serum, green
    Explanation
    The correct answer is lithium heparin, serum, green. A PST (plasma separator tube) contains lithium heparin as an anticoagulant, which prevents blood clotting. When the blood is centrifuged in the PST, it separates into two components - plasma and serum. The plasma contains the liquid portion of the blood along with any anticoagulants or additives present in the tube. On the other hand, the serum is the clear, yellowish fluid that remains after the blood has clotted and the clot has been removed. The top color of a PST tube is green, indicating that it contains lithium heparin.

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  • 18. 

    Light green tubes contain what additive?

    • EDTA

    • SPS

    • Heparin

    • Sodium Citrate

    • Potassium Oxalate

    Correct Answer
    A. Heparin
    Explanation
    Heparin is the correct answer because it is commonly used as an anticoagulant additive in light green tubes. Heparin prevents blood from clotting by inhibiting the activity of thrombin and other clotting factors. This allows for accurate testing of blood samples without interference from clotting.

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  • 19. 

    Glucose is performed on what color top?

    • Green

    • Light blue

    • Red

    • Grey

    • Orange

    Correct Answer
    A. Grey
    Explanation
    The question is asking about the color top on which glucose is performed. The correct answer is "Grey". This suggests that when conducting a test or analysis involving glucose, it is typically done using a grey top.

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  • 20. 

    Potassium oxalate is contained in what tube?

    • Light blue

    • Orange

    • Gold

    • Lavender

    • Grey

    Correct Answer
    A. Grey
    Explanation
    Potassium oxalate is contained in the grey tube.

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  • 21. 

    Sodium fluoride is paired with what additive?

    • Sodium heparin

    • Potassium Chloride

    • Acid citrate

    • Potassium Oxalate

    Correct Answer
    A. Potassium Oxalate
    Explanation
    Sodium fluoride is paired with Potassium Oxalate as an additive.

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  • 22. 

    Acid Citrate Dextrose is an additive found in what color tubes?

    • Gold

    • Grey

    • Green

    • Clear

    • Yellow

    Correct Answer
    A. Yellow
    Explanation
    Acid Citrate Dextrose (ACD) is commonly used as an anticoagulant in blood collection tubes. The ACD additive is typically found in yellow tubes, which are used for collecting blood samples for certain types of tests. The yellow color of the tube indicates the presence of ACD, ensuring that the collected blood remains in a suitable condition for further analysis.

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  • 23. 

    Whole blood is collected in what color tubes?

    • Pearl

    • Lavendar

    • Yellow

    • Light blue

    • Light green

    Correct Answer
    A. Lavendar
    Explanation
    Whole blood is collected in lavender tubes. Different color tubes are used for different types of blood tests to ensure accurate results. Lavender tubes typically contain an anticoagulant called EDTA (ethylenediaminetetraacetic acid), which prevents the blood from clotting and allows for the collection of a liquid sample. This type of tube is commonly used for complete blood count (CBC) tests, which analyze the different components of blood, such as red and white blood cells, hemoglobin, and platelets.

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  • 24. 

    What is the additive in light blue tubes?

    • Sodium cyanide

    • Sodium fluoride

    • Sodium chloride

    • Sodium citrate

    • Sodium citracal

    Correct Answer
    A. Sodium citrate
    Explanation
    Sodium citrate is the additive in light blue tubes. Sodium citrate is commonly used as an anticoagulant in blood collection tubes, including light blue tubes. It prevents the blood from clotting by binding to calcium ions, which are necessary for the clotting process. This allows for accurate testing of coagulation factors and other blood parameters. Sodium cyanide, sodium fluoride, sodium chloride, and sodium citracal are not typically used as additives in light blue tubes.

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  • 25. 

    Green tubes contain which additives?

    • Sodium or Lithium helium

    • Sodium polyanetholesulfate

    • Thrombin

    • Sodium Fluoride

    • Sodium or Lithium heparin

    Correct Answer
    A. Sodium or Lithium heparin
    Explanation
    The green tubes contain either Sodium or Lithium heparin as additives. Heparin is an anticoagulant that prevents blood from clotting. Sodium and Lithium are different forms of heparin that can be used depending on the specific requirements of the test being performed. These additives help maintain the integrity of the blood sample by preventing clotting, allowing for accurate testing and analysis.

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  • 26. 

    Pearl tubes contain which additive?

    • Anticoagulant: EDTA

    • Anticoagulant: SPS

    • Clot activator: Lithium heparin

    • Clot deactivator: PST

    • Thrombin

    Correct Answer
    A. Anticoagulant: EDTA
    Explanation
    Pearl tubes contain the additive anticoagulant: EDTA. EDTA is commonly used as an anticoagulant in blood collection tubes because it helps prevent the blood from clotting by binding to calcium ions, which are necessary for the clotting process. This allows the blood to remain in a liquid state for further testing or analysis.

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  • 27. 

    Pink tubes contain:

    • Sodium Citrate

    • FDA

    • EDTA

    • PPT

    • SPS

    Correct Answer
    A. EDTA
    Explanation
    Pink tubes contain EDTA. EDTA stands for ethylenediaminetetraacetic acid, which is an anticoagulant commonly used in blood collection tubes. It works by binding to calcium ions in the blood, preventing blood clotting. This allows for the collection of whole blood or plasma for various laboratory tests. Pink tubes are typically used for blood banking, immunohematology, and blood typing. The presence of EDTA in pink tubes ensures that the blood sample remains in a liquid state and can be used for further analysis without clotting.

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  • 28. 

    Orange tubes contain:

    • Thrombus

    • Thrombil

    • Thrombim

    • Thrombin

    • Thrombic

    Correct Answer
    A. Thrombin
    Explanation
    Orange tubes contain thrombin. Thrombin is an enzyme that plays a crucial role in the blood clotting process. It converts fibrinogen, a soluble protein, into fibrin, an insoluble protein, which forms a mesh-like structure to create a blood clot. These orange tubes are used for collecting blood samples for coagulation tests, as the presence of thrombin helps in initiating the clotting process and obtaining accurate results.

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  • 29. 

    Light green tubes contain:

    • Heparin with gel

    • Heparin with thrombin

    • Heparin

    • Heparin with EDTA

    • Heparin with oxalate

    Correct Answer
    A. Heparin with gel
    Explanation
    The light green tubes contain heparin with gel. Heparin is an anticoagulant that prevents blood from clotting. The addition of gel in the tube helps in the separation of plasma from the blood cells during centrifugation. This allows for the collection of clear plasma for further testing or analysis.

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  • 30. 

    Plasma separator tubes are what color:

    • Lavendar

    • Orange

    • Light green

    • Red

    • Gold

    Correct Answer
    A. Light green
    Explanation
    Plasma separator tubes are light green in color because they contain a gel additive called lithium heparin, which acts as an anticoagulant. This gel separates the plasma from the other components of blood, such as red and white blood cells, when the tube is centrifuged. The light green color of the tube helps to differentiate it from other types of tubes used for blood collection, making it easier for healthcare professionals to identify and use the correct tube for plasma separation.

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  • 31. 

    EDTA can be found in which tubes?

    • Light blue, Pink

    • Light green, Light blue

    • Lavendar, Grey

    • Lavendar, Pink

    • Orange, Pink

    Correct Answer
    A. Lavendar, Pink
    Explanation
    EDTA (Ethylenediaminetetraacetic acid) is commonly used as an anticoagulant in blood collection tubes. Lavender tubes contain EDTA and are used for complete blood counts (CBC) and blood typing. Pink tubes also contain EDTA and are used for blood bank testing and blood typing. Therefore, EDTA can be found in both lavender and pink tubes.

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  • 32. 

    PST is a ______________ and yields _______.

    • Prostate seeking tube, plasma

    • Serum separator tube, plasma

    • Plasma separator tube, serum

    • Plasma separator tube, plasma

    Correct Answer
    A. Plasma separator tube, plasma
    Explanation
    A plasma separator tube is a type of tube used in medical laboratories to separate plasma from whole blood. This type of tube contains an anticoagulant and a gel barrier that separates the plasma from the other components of blood during centrifugation. The separated plasma can then be used for various diagnostic tests. Therefore, the correct answer is "plasma separator tube, plasma."

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  • 33. 

    SST is a ____________ and yields _________.

    • Plasma separator tube, serum

    • Serum separator tube, plasma

    • Serum separator tube, serum

    • Plasma separator tube, plasma

    Correct Answer
    A. Serum separator tube, serum
    Explanation
    A serum separator tube is a type of tube used in medical testing to separate serum from blood cells. Serum is the liquid portion of blood that is left after the blood has clotted and the clot has been removed. It contains various proteins, hormones, antibodies, and other substances that can be analyzed for diagnostic purposes. Therefore, using a serum separator tube yields serum, which is the correct answer.

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  • 34. 

    Serum is yielded in an SST because it contains what additive?

    • Clot agglutinins

    • Gel and thixotropic separator

    • Anticoagulant and gel

    • Clot activator and gel

    • Serum and gel

    Correct Answer
    A. Clot activator and gel
    Explanation
    The correct answer is "clot activator and gel". Serum is yielded in an SST (Serum Separator Tube) because it contains a clot activator, which helps in the clotting process of the blood sample. The gel present in the tube acts as a separator, allowing the blood cells to separate from the serum during the centrifugation process. This combination of clot activator and gel ensures that the serum obtained is free from any clotting factors or cells, making it suitable for various diagnostic tests.

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  • 35. 

    Orange tubes yield ______ because they contain _________.

    • Plasma, clot activator

    • Serum, clot activator

    • Plasma, anticoagulant

    • Serum, anticoagulant

    Correct Answer
    A. Serum, clot activator
    Explanation
    Orange tubes yield serum because they contain clot activator. Clot activator is added to the tube to promote blood clotting, which allows the separation of serum from the blood sample. Serum is the liquid portion of blood that remains after the clot has formed and the blood has been centrifuged. It does not contain the clotting factors that are present in plasma, making it suitable for certain laboratory tests.

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  • 36. 

    Red tubes that can be used as a discard tube often contain:

    • Clot activator

    • Thixotropic gel

    • No additive

    • Carcinomas

    • Plasma preservation gel

    Correct Answer
    A. No additive
    Explanation
    Red tubes that can be used as a discard tube often contain no additive. This means that there is no substance added to the tube that can affect the blood sample collected. These tubes are used to discard the initial blood sample drawn before collecting the actual sample for testing. By using a tube with no additive, any potential interference from additives or preservatives is eliminated, ensuring the accuracy of the final test results.

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  • 37. 

    A clot activator tube without gel that comes after yellow but before orange is what color?

    • Light blue

    • Red-non additive

    • Red-clot activator

    • Gold

    • Red & Black

    Correct Answer
    A. Red-clot activator
    Explanation
    The correct answer is red-clot activator. In the question, it is mentioned that the tube comes after yellow but before orange. The only option that fits this description is red-clot activator. The other options, light blue, red-non additive, gold, and red & black, do not match the given description.

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  • 38. 

    A tube that is vitally important for coagulation tests is ______, contains ______, and yields ________.

    • Yellow, SPS, whole blood

    • Light blue, blood, EDTA

    • Orange, thrombin, serum

    • Light blue, sodium citrice, serum

    • Light blue, sodium citrate, serum

    Correct Answer
    A. Light blue, sodium citrate, serum
    Explanation
    The correct answer is light blue, sodium citrate, serum. In coagulation tests, a light blue tube is used because it contains sodium citrate as an anticoagulant. Sodium citrate prevents blood from clotting by binding to calcium, which is necessary for the coagulation process. The tube is used to collect whole blood, and after centrifugation, it yields serum, which is the liquid portion of blood without clotting factors. Therefore, the correct answer is light blue, sodium citrate, serum.

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  • 39. 

    Sodium polyanetholesulfate is found in what tubes?

    • Blood collection tubes

    • Chemistry tubes

    • Blood culture tubes

    • Serology tubes

    • Blood bank tubes

    Correct Answer
    A. Blood culture tubes
    Explanation
    Sodium polyanetholesulfate is found in blood culture tubes. Blood culture tubes are specifically designed to collect and culture blood samples to detect bacterial or fungal infections in the bloodstream. Sodium polyanetholesulfate is an anticoagulant and preservative commonly used in blood culture tubes to prevent blood clotting and maintain the viability of microorganisms during the incubation period.

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  • 40. 

    Clot activator and gel can be found in:

    • Red and yellow tubes

    • Green and grey tubes

    • Red and grey tubes

    • Green and light blue tubes

    • Red and green tubes

    Correct Answer
    A. Red and green tubes
    Explanation
    Clot activator and gel can be found in red and green tubes. The red tube contains a clot activator, which helps to speed up the clotting process by activating the coagulation cascade. The green tube contains a gel separator, which helps to separate the serum or plasma from the other components of the blood after centrifugation. Therefore, the red and green tubes are used for collecting and processing blood samples for various laboratory tests.

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  • 41. 

    Sodium citrate is a/an:

    • Anticoagulant

    • Clot activator

    Correct Answer
    A. Anticoagulant
    Explanation
    Sodium citrate is classified as an anticoagulant. Anticoagulants are substances that prevent blood from clotting. Sodium citrate works by binding to calcium ions, which are necessary for the clotting process. By removing calcium, sodium citrate prevents the formation of blood clots. This property makes it useful in various medical procedures, such as blood transfusions and laboratory tests, where the prevention of clotting is essential.

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  • 42. 

    Presence of clot activator yields:

    • Plasma

    • Plasmic gel

    • Serology

    • Serum

    • Serial

    Correct Answer
    A. Serum
    Explanation
    When a clot activator is present, it causes the blood sample to clot. This clotting process separates the liquid portion of the blood, known as plasma, from the solid components. After the clot is formed, it is then centrifuged to separate the serum from the clot. Serum is the clear, yellowish fluid that remains after the clot is removed. It contains various proteins, electrolytes, hormones, and antibodies, making it useful for diagnostic tests and medical research. Therefore, the presence of a clot activator yields serum as the correct answer.

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  • 43. 

    Presence of anticoagulant yields:

    • Plasmic

    • Plasma

    • Serium

    • Serum

    • Plasm

    Correct Answer
    A. Plasma
    Explanation
    The presence of an anticoagulant in a sample prevents the blood from clotting. As a result, the blood can be separated into its components, including plasma. Therefore, the correct answer is plasma, as it is the component of blood that is obtained when an anticoagulant is present.

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  • 44. 

    Correct order:

    • Grey, green, gold

    • Gold, yellow, royal blue

    • Orange, red, grey

    • Orange, pst, sst

    • Sst, orange, pink

    Correct Answer
    A. Sst, orange, pink
    Explanation
    The correct order is sst, orange, pink. This can be determined by examining the given sequences. In the first sequence, "grey" comes before "green" and "gold" comes after "green". In the second sequence, "gold" comes before "yellow" and "royal blue" comes after "yellow". In the third sequence, "orange" comes before "red" and "grey" comes after "red". In the fourth sequence, "orange" comes before "pst" and "sst" comes after "pst". Finally, in the fifth sequence, "sst" comes before "orange" and "pink" comes after "orange". Therefore, the correct order is sst, orange, pink.

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  • 45. 

    In the order of draw, anticoagulants are drawn before clot activators.

    • True

    • False

    Correct Answer
    A. False
    Explanation
    The statement is false because in the order of draw, clot activators are actually drawn before anticoagulants. Clot activators are substances that promote the clotting of blood, while anticoagulants are substances that prevent blood from clotting. Therefore, it is necessary to draw the clot activators first to ensure that the blood sample does not start clotting before the anticoagulant is added.

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  • 46. 

    If electrolytes are requested, what tube is needed?

    • SST

    • Sodium heparin

    • Lithium fluoride

    • Lithium heparin

    • Heparin chloride

    Correct Answer
    A. Lithium heparin
    Explanation
    Lithium heparin is the correct answer because it is a tube that is commonly used for collecting blood samples for electrolyte testing. Lithium heparin tubes contain a gel separator and lithium heparin as an anticoagulant, which prevents clotting and allows for the accurate measurement of electrolyte levels in the blood. Other options like SST, sodium heparin, lithium fluoride, and heparin chloride may be used for different types of tests, but for specifically testing electrolytes, the lithium heparin tube is needed.

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  • 47. 

    Why should you choose lithium heparin as the additive when electrolytes are requested?

    • It reacts better with the blood

    • It contains better quality additive

    • Lithium is an electrolyte and can enhance the value in the blood

    • Lithium is not an electrolyte and will not affect the values in the blood

    • Sodium is not an electrolyte and will not be affected by its presence in the tube

    Correct Answer
    A. Lithium is not an electrolyte and will not affect the values in the blood
    Explanation
    Lithium heparin should be chosen as the additive when electrolytes are requested because lithium is not an electrolyte and therefore will not affect the values in the blood. This ensures that the electrolyte levels in the blood are not altered by the additive, allowing for accurate measurement and analysis.

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  • 48. 

    Which tube contains blood that is most like that inside our bodies?

    • Lavender

    • Grey

    • Pink

    • Gold

    • SST

    Correct Answer
    A. Lavender
    Explanation
    The tube labeled "Lavender" contains blood that is most like that inside our bodies. Lavender tubes are typically used for collecting whole blood samples and contain an anticoagulant called EDTA, which prevents the blood from clotting. This allows the blood to retain its natural composition and characteristics, making it the closest representation of the blood inside our bodies. The other tube options either contain different types of anticoagulants or clot activators, which alter the blood composition and are not as representative of our body's blood.

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  • 49. 

    A blood bank tube that contains _______ is _______.

    • Sodium heparin, light blue

    • Potassium oxalate, pink

    • EDTA, grey

    • EDTA, pink

    • No-additive, red

    Correct Answer
    A. EDTA, pink
    Explanation
    The correct answer is EDTA, pink. EDTA is a commonly used anticoagulant that prevents blood from clotting by binding to calcium ions. It is often used in blood collection tubes for various laboratory tests. The pink color of the tube indicates that it contains EDTA as the additive.

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  • Current Version
  • Oct 18, 2023
    Quiz Edited by
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  • Jan 08, 2012
    Quiz Created by
    Nikita9031

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