Deck 2: Venipuncture Equipment

Question 1

The tube of choice for trace metal analysis is:

A) light blue.
B) red.
C) gold.
D) royal blue.

Answer 1

D

Question 2

Samples collected in serum separator tubes are most frequently delivered to:

A) immunohematology.
B) serology.
C) hematology.
D) chemistry.

Answer 2

D

Question 3

The difference between plasma and serum is:

A) serum contains fibrinogen.
B) serum is obtained from a nonclotted sample.
C) plasma is obtained from a clotted sample.
D) plasma contains fibrinogen.

Answer 3

D

Question 4

The correct order of the four stages of the coagulation or hemostasis process is:

A) Retraction or tightening of the clot; platelets become sticky,clump together,and adhere to the injured vessel wall; degradation or breakdown of the clot; and the extrinsic,intrinsic,and common pathway activate and proceed to complete the clot.
B) Platelets become sticky,clump together,and adhere to the injured vessel wall; retraction or tightening of the clot; degradation or breakdown of the clot; and the extrinsic,intrinsic,and common pathway activate and proceed to complete the clot.
C) Platelets become sticky,clump together,and adhere to the injured vessel wall; the extrinsic,intrinsic,and common pathway activate and proceed to complete the clot; retraction or tightening of the clot; and degradation or breakdown of the clot.
D) The extrinsic,intrinsic,and common pathway activate and proceed to complete the clot; retraction or tightening of the clot; degradation or breakdown of the clot; and platelets become sticky,clump together,and adhere to the injured vessel wall.

Question 5

A serum separator tube should not be collected for:

A) cholesterol.
B) crossmatch.
C) bilirubin.
D) glucose.

Question 6

To prevent blood from clotting,the sample must be:

A) collected in a tube containing an anticoagulant.
B) inverted right after collection.
C) centrifuged right after collection.
D) Both A and B

Question 7

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

A) prevent hemolysis.
B) prevent clotting.
C) preserve glucose.
D) maintain cellular morphology.

Question 8

What information does the color coding of evacuated tubes provide?

A) Presence of an anticoagulant
B) Type of sample collected
C) Need to invert the tube
D) All of the above

Question 9

The most common sample analyzed in the hematology section is:

A) plasma.
B) whole blood.
C) urine.
D) serum.

Question 10

Which of the following tubes contain a separation gel?

A) Gold
B) Light green
C) White
D) All of the above

Question 11

Which of the following tubes must always be completely filled?

A) Gray
B) Light blue
C) Red
D) Pink

Question 12

Coagulation requires which of the following?

A) Prothrombin
B) Thrombin
C) Fibrin
D) All of the above

Question 13

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

A) winged blood collection sets.
B) plastic syringes.
C) glass syringes.
D) evacuated tube system (ETS).

Question 14

Pathways of the coagulation cascade are:

A) platelets and thrombin.
B) intrinsic and extrinsic.
C) fibrinogen and prothrombin.
D) heparin and Coumadin.

Question 15

Which of the following pairings is incorrect?

A) Icteric and yellow
B) Lipemic and cloudy
C) Hemolyzed and red
D) Fasting and cloudy

Question 16

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.

Question 17

The main anticoagulant for coagulation studies is:

A) ethylenediaminetetraacetic acid (EDTA).
B) sodium citrate.
C) heparin.
D) oxalate.

Question 18

The plastic tubing on a winged blood collection set may be attached to which of the following?

A) Syringe
B) Evacuated tube holder
C) IV line setup
D) All of the above

Question 19

The primary antiseptic for routine venipuncture is:

A) iodine.
B) chlorhexidine.
C) isopropyl alcohol.
D) Betadine.

Question 20

Most laboratory tests are performed using:

A) arterial blood.
B) venous blood.
C) capillary blood.
D) oxygenated blood.

Question 21

The recommended order of draw for a complete blood count,prothrombin time,and cholesterol is:

A) lavender,light blue,and red.
B) light blue,lavender,and red.
C) red,lavender,and light blue.
D) light blue,red,and lavender.

Question 22

Most anticoagulants in blood collection tubes prevent clotting by:

A) binding calcium.
B) acting as an antithrombin agent.
C) binding fibrinogen.
D) releasing heparin.

Question 23

Yellow stopper tubes containing sodium polyanethol sulfonate are used for which of the following?

A) Blood cultures
B) Lead testing
C) Human leukocyte antigen (HLA) typing
D) Paternity testing

Question 24

The purpose of gel in an evacuated tube is to:

A) prevent clot formation.
B) prevent cellular contamination of serum or plasma.
C) increase clot formation.
D) facilitate blood bank testing procedures.

Question 25

A blood collector who used a light blue stopper tube after its expiration date may have the sample rejected because:

A) the sample is clotted.
B) the differential does not stain properly.
C) the tube is not completely filled.
D) Both A and C

Question 26

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.

Question 27

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

A) Light blue,green,and lavender
B) Lavender,green,and light blue
C) Green,light blue,and lavender
D) Green,lavender,and light blue

Question 28

Tubes containing soybean trypsin inhibitor and thrombin are used to collect samples for:

A) glucose.
B) fibrin degradation products.
C) blood alcohol levels.
D) paternity tests.

Question 29

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.

Question 30

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

A) green.
B) gold.
C) orange.
D) red.

Question 31

Electrolytes can be performed on serum or plasma from which of the following tubes?

A) Green
B) Gold
C) Red
D) All of the above

Question 32

The presence of a clot is acceptable in:

A) red stopper tubes.
B) lavender stopper tubes.
C) green stopper tubes.
D) light blue stopper tubes.

Question 33

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.

Question 34

Drawing a lavender stopper tube before a gold stopper tube can cause a falsely:

A) increased calcium value.
B) decreased glucose value.
C) decreased calcium value.
D) increased glucose value.

Question 35

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

A) Lavender
B) Light blue
C) White
D) Green

Question 36

Lavender stopper tubes are used for which of the following laboratory departments?

A) Hematology
B) Coagulation
C) Microbiology
D) Chemistry

Question 37

An example of an antiglycolytic agent is:

A) potassium oxalate.
B) ethylenediaminetetraacetic acid (EDTA).
C) sodium fluoride.
D) ammonium heparin.

Question 38

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 sample.

Question 39

Which of the following tubes contains an anticoagulant that does not bind calcium?

A) Light blue
B) Green
C) Gray
D) Lavender

Question 40

The anticoagulant present in a light-blue stopper tube is:

A) Ethylenediaminetetraacetic acid (EDTA).
B) sodium citrate.
C) heparin.
D) potassium oxalate.

Question 41

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.

Question 42

Some evacuated tubes are designed not to completely fill.

Question 43

A lavender stopper tube maintains cellular integrity better than other tubes.

Question 44

Needle protection devices are not necessary when using a syringe.

Question 45

The most important reason that the blood collector's tray should not be carried into the room of a patient in isolation is that:

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 blood collector when needed.
D) supplies may be stolen from the tray.

Question 46

A blood pressure cuff can be used as a tourniquet.

Question 47

When using a winged blood collection set,a light blue stopper tube should be collected first.

Question 48

Plasma separator tubes (PSTs) contain the anticoagulant ethylenediaminetetraacetic acid (EDTA).

Question 49

A winged blood collection set would be primarily used to collect blood from the:

A) heel.
B) antecubital vein.
C) finger.
D) hand.

Question 50

A blood-alcohol test should not be collected in a gray stopper tube.

Question 51

If a needle has not been used it can be recapped.

Question 52

The part of a syringe that is withdrawn after the vein is entered is the:

A) barrel.
B) hub.
C) shield.
D) plunger.

Question 53

Blood collected in a syringe is transferred to evacuated tubes.

Question 54

Tubes containing powdered anticoagulant do not require mixing.

Question 55

The needle holder can be used as a needle safety device.

Question 56

Which of the following needles has the largest diameter?

A) 16 gauge
B) 18 gauge
C) 20 gauge
D) 22 gauge

Question 57

Collecting a large evacuated tube using a 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.