
Phlebotomy order of draw
Created on 22nd July 2025
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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