Chapter.7 Verified Test Bank Venipuncture Equipment

Chapter 7: Venipuncture Equipment

Multiple Choice

1. Phlebotomy equipment can be organized in all of the following except:

A. trays.

B. mobile workstations.

C. infant cradle pads.

D. drawing stations.

2. The most economical and safest method for performing routine venipuncture is the use of:

A. winged blood collection set.

B. plastic syringes.

C. glass syringes.

D. evacuated tube system (ETS).

3. All of the following can decrease the possibility of developing a latex allergy except:

A. wearing powdered gloves.

B. wearing nonpowdered gloves.

C. sanitizing the hands as soon as gloves are removed.

D. wearing cotton gloves.

4. The primary antiseptic for routine venipuncture is:

A. iodine.

B. chlorhexidine.

C. isopropyl alcohol.

D. Betadine.

5. A properly tied tourniquet:

A. permits arterial flow and blocks venous flow.

B. blocks arterial and venous flow.

C. prevents backflow.

D. permits venous flow and blocks arterial flow.

6. The plastic tubing on a winged blood collection set may be attached to all of the following except a(n):

A. syringe.

B. large red stopper tube.

C. intravenous line setup.

D. evacuated tube holder.

7. The color coding of evacuated tubes provides information about all of the following except the:

A. volume of specimen collected.

B. type of specimen collected.

C. need to invert the tube.

D. presence of an anticoagulant.

8. Which of the following tubes must always be filled to the correct capacity?

A. Gray.

B. Light blue.

C. Red.

D. Pink.

9. The purpose of sodium fluoride in gray stopper tubes is to:

A. prevent hemolysis.

B. prevent clotting.

C. preserve glucose.

D. maintain cellular morphology.

10. All of the following tubes contain a separation gel except:

A. pink.

B. light green.

C. white.

D. red/gray.

11. The tube of choice for trace metal analysis is:

A. light blue.

B. red.

C. gold.

D. royal blue.

12. Tubes containing soybean trypsin inhibitor and thrombin are used to collect specimens for:

A. glucose.

B. fibrin degradation products.

C. blood alcohol levels.

D. paternity tests.

13. Serum separator tubes should not be used for:

A. blood bank tests.

B. therapeutic drug tests.

C. serology tests.

D. all of the above.

14. Yellow stopper tubes are used for all of the following except:

A. blood cultures.

B. lead testing.

C. human leukocyte antigen (HLA) typing.

D. paternity testing.

15. Packages of evacuated tubes manufactured at the same time are called a:

A. batch.

B. set.

C. lot.

D. bundle.

16. The ratio of blood to anticoagulant in a light blue stopper tube is:

A. 2:1.

B. 5:1.

C. 9:1.

D. 10:1.

17. The purpose of thixotropic gel in an evacuated tube is to:

A. prevent clot formation.

B. prevent cellular contamination of serum.

C. increase clot formation.

D. facilitate blood bank testing procedures.

18. Blood cultures may be collected in:

A. yellow stopper tubes containing sodium polyanethole sulfonate (SPS).

B. yellow stopper tubes containing acid citrate dextrose (ACD).

C. yellow/gray stopper tubes containing thrombin.

D. plain, sterile red stopper tubes.

19. The anticoagulant present in a light blue stopper tube is:

A. Ethylenediaminetetraacetic acid (EDTA).

B. sodium citrate.

C. heparin.

D. potassium oxalate.

20. In an evacuated tube, blood flow into the tube depends on:

A. the vacuum in the tube.

B. gravity.

C. blood pressure.

D. air pressure.

21. Most anticoagulants in blood collection tubes prevent clotting by:

A. binding calcium.

B. acting as an antithrombin agent.

C. binding fibrinogen.

D. releasing heparin.

22. Lavender stopper tubes can be used for all of the following except:

A. coagulation tests.

B. platelet counts.

C. differential counts.

D. hematocrits.

23. Which of the following tubes contains an anticoagulant that inhibits thrombin?

A. Lavender.

B. Light blue.

C. White.

D. Light green.

24. When collecting coagulation tests from a patient with polycythemia, the:

A. tube should not be inverted.

B. amount of anticoagulant is increased.

C. tube should contain thrombin.

D. amount of anticoagulant is decreased.

25. The tube that will best prevent falsely increased potassium test results is:

A. light green.

B. green.

C. red.

D. gold.

26. To obtain a serum sample for a stat test on a patient receiving anticoagulant therapy, the recommended tube is:

A. light green.

B. red/gray or gold.

C. orange.

D. red.

27. The difference between glass and plastic red stopper tubes is that the:

A. glass tubes cannot be used for serology tests.

B. glass tubes contain heparin.

C. plastic tubes contain a clot activator.

D. plastic tubes are recommended for blood bank tests.

28. Which of the following is the most acceptable order of tube draw?

A. Green, red, and light blue.

B. Lavender, red, and yellow.

C. Light blue, red, and lavender.

D. Yellow, green, and light blue.

29. Drawing a lavender stopper tube before a serum separator tube (SST) can cause a falsely:

A. increased calcium value.

B. decreased glucose value.

C. decreased calcium value.

D. increased glucose value.

30. A phlebotomist who used a light blue stopper tube after its expiration date may have the specimen rejected because:

A. the specimen is clotted.

B. the differential does not stain properly.

C. the tube is not completely filled.

D. both A and C.

31. Failing to adequately invert a lavender stopper tube after collection will:

A. cause hemolysis.

B. falsely elevate calcium results.

C. destroy coagulation factors.

D. produce a clotted specimen.

32. Electrolytes can be performed on serum or plasma from all of the following tubes except:

A. light green.

B. gray.

C. plastic red.

D. gold.

33. The advantages of evacuated tube system (EST) over a syringe are:

1. no transfer of blood is necessary.

2. it is a closed system.

3. the holder can be reused.

4. you have more control over the vacuum.

A. 1 and 2.

B. 2 and 4.

C. 1, 2, and 3.

D. 1, 2, 3, and 4.

34. To prevent leakage of blood when tubes are changed, evacuated tube needles:

A. have a blunting device.

B. use a rubber sheathe.

C. are only used for single tube collections.

D. are used with safety holders.

35. The stopper-puncturing needle should be completely pushed into the evacuated tube:

A. after the vein is entered.

B. while the equipment is being assembled.

C. just before the vein is entered.

D. prior to anchoring the vein.

36. Which of the following needles has the largest diameter?

A. 16 gauge.

B. 18 gauge.

C. 20 gauge.

D. 22 gauge.

37. Collecting a large evacuated tube using 23-gauge needle:

A. is recommended for geriatric patients.

B. is required for certain automated tests.

C. may cause a hemolyzed sample.

D. may cause a loss of vacuum in the tube.

38. When collecting blood from a patient with small, fragile veins, the appropriate needle gauge is:

A. 18.

B. 20.

C. 21.

D. 23.

39. Forcing blood from a syringe into an evacuated tube:

A. prevents the blood from clotting.

B. can only be done when using a small syringe.

C. may hemolyze the specimen.

D. is required when using a transfer device.

40. The most important reason that the phlebotomist’s tray should not be carried into the room of a patient in isolation is:

A. surfaces on the tray may act as a reservoir for infectious agents.

B. there is often no spare space available in an isolation room.

C. the tray should be left in the hallway so others may find the phlebotomist when needed.

D. supplies may be stolen from the tray.

41. Contains thrombin

42. Used for lead testing

43. Rubber stoppers are specially formulated

44. Contains thixotropic gel and a clot activator

45. Sedimentation rates

46. Designated for blood bank specimens

47. Used for molecular diagnostics

KEY: Topic: Evacuated tubes

DIF: Level 1

Learning Objective: 7.6

KEY: Topic: Evacuated tubes

DIF: Level 1

Learning Objective: 7.6

KEY: Topic: Evacuated tubes

DIF: Level 1

Learning Objective: 7.6

48. Given the following blood test order scenarios, provide the proper order of draw for the tubes listed for each scenario:

1. Blood culture bottles, gray and gold