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Phlebotomy order of draw

Created on 22nd July 2025

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Grade level: Adult Educationth grade

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65 Questions

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Questions (65)

1. What is the first tube to draw in the order of draw?

Red top tube

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2. Which tube is used for coagulation tests?

Blue top tube

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3. What is the purpose of using a lavender top tube?

For hematology tests

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4. Which tube should be drawn last in the order of draw?

Gray top tube

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5. What is the additive in the green top tube?

Heparin

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6. What is the main reason for following the order of draw in phlebotomy?

To prevent contamination of samples

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7. Which tube is typically used for glucose testing?

Gray top tube

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8. What color tube is used for serum testing?

Red top tube

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9. What is the purpose of the blue top tube in the order of draw?

For coagulation studies

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10. What is the first tube color in the order of draw for phlebotomy?

Red

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11. Which tube color is used for coagulation tests in the order of draw?

Light Blue

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12. What is the purpose of the lavender tube in phlebotomy?

Complete blood count

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13. In the order of draw, which tube should be drawn after the red tube?

Green

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14. Why is the order of draw important in phlebotomy?

To prevent contamination

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15. What is the last tube color typically drawn in the order of draw?

Gray

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16. Which additive is found in the green tube?

Heparin

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17. What is the main reason for using a gray tube?

Glucose measurement

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18. Which tube is used for microbiology cultures?

Yellow

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19. What additive is found in the red-top tube used in phlebotomy?

No additive

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20. Which additive is present in the green-top tube?

Sodium Heparin

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21. What is the purpose of the EDTA additive found in the lavender-top tube?

To prevent clotting

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22. Which tube contains Sodium Citrate as its additive?

Blue-top tube

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23. What additive is in the gray-top tube?

Sodium Fluoride, Potassium Oxalate, Sodium Flouride

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24. In which tube would you find no additive for serum collection?

Red-top tube

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25. What is the primary use of the lavender-top tube with EDTA?

Complete blood count

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26. Which tube would you use for coagulation tests?

Blue-top tube

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27. What does the gray-top tube additive do?

Preserves glucose

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28. What additive is used in the pink-top tube commonly used for blood banking?

EDTA

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29. What is an arteriovenous fistula?

A connection between an artery and a vein

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30. What is a graft in the context of phlebotomy?

A tissue or organ transplanted from one site to another.

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31. What is an important safety practice when working with patients who have grafts?

Using aseptic techniques.

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32. What does the term 'iceteric' refer to in phlebotomy?

A condition indicating elevated bilirubin levels in the blood

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33. What are electrolytes?

Substances that dissociate into ions in solution and are essential for various bodily functions

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34. Which of the following sites is commonly used for venipuncture?

The median cubital vein, cephalic vein and basilic vein

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35. What is a hematoma in the context of phlebotomy?

A collection of blood outside of blood vessels due to leakage.

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36. What is iatrogenic anemia and how can it be caused by phlebotomy?

Iatrogenic anemia is a decrease in red blood cells caused by excessive blood draws.

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37. What is hemolysis in phlebotomy?

The breakdown of red blood cells after blood collection.

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38. What are the two culture bottles called in phlebotomy?

Aerobic and Anaerobic bottles

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39. Who is a glucose challenge test normally performed on?

Pregnant women

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40. What is the primary purpose of a glucose tolerance test?

To measure the body's response to glucose

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41. What is a lipemic test?

A test that identifies the presence of fatty substances in the blood.

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42. What is a pneumatic tube system primarily used for?

Transporting documents and small items

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43. At what temperature should body temperature specimens be maintained for accurate results?

37°C, 98.6°F

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44. What is the primary function of glycolysis in cellular metabolism?

To convert glucose into pyruvate and generate energy

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45. What is the first tube color in the CLSI order of draw for venipuncture?

Red

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46. Which tube comes after the Light Blue tube in the CLSI order of draw?

Gold

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47. What is the purpose of using a Lavender tube in venipuncture?

Complete Blood Count (CBC)

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48. Which of the following tubes contains heparin as an anticoagulant?

Green

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49. What is the correct order of draw for venipuncture according to CLSI?

Blood culture or yellow SPS, light blue, serum tubes, EDTA, Oxalate

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50. Which blood collection tube is typically used for serum tests?

Red

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51. Why is the order of draw important in venipuncture?

To minimize contamination

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52. What is the correct order of draw for capillary collection according to CLSI guidelines?

EDTA tubes first, then serum tubes

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53. What is the primary purpose of a discard tube in phlebotomy?

To prevent contamination of the sample

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54. What is bilirubin and why is it important in phlebotomy?

A waste product from the breakdown of red blood cells.

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55. Which of the following tubes is used for coagulation studies?

Blue top tube

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56. What is the function of the lavender top tube in phlebotomy?

Contains EDTA for hematology tests

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57. What color top tubes in phlebotomy are anticoagulant?

Green

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58. What type of tube is commonly used to collect blood for an electrolyte panel?

Green top tube

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59. Which of the following tubes is NOT suitable for an electrolyte panel?

Gray top tube

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60. What type of tube is commonly used for collecting samples for an electrolyte panel?

Green top tube (heparin)

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61. Which electrolyte is NOT typically included in a standard electrolyte panel?

Calcium

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62. Which tube is commonly used for collecting samples for an electrolyte panel?

Green top tube

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63. What is the purpose of the electrolyte panel in blood testing?

To assess kidney function

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64. What type of tube is commonly used for collecting samples for an electrolyte panel?

Green top tube

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65. Why is it important to use the correct tube for electrolyte panel testing?

To ensure accurate results

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