Chapter 7

Question 1

Which adhesive prevents glycolysis?

A. EDTA
B. Heparin
C. Potassium oxalate
D. Sodium fluoride

Answer 1

D. Sodium fluoride

Question 2

The following supplies were gathered for a routine venipuncture. Which item is incorrect?

A. ETS tubes
B. Iodine swab
C. Safety needle
D. Tourniquet

Answer 2

B. Iodine swab

Question 3

Which of the following tubes can be used to collect a serum specimen?

A. Light blue top
B. Green top
C. PST
D. Red top

Answer 3

D. Red top

Question 4

A tourniquet is used in a venipuncture to:

A. Concentrate the blood specimen
B. Find and enter veins more easily
C. Keep the vein from collapsing
D. All of the above.

Answer 4

B. Find and enter veins more easily

Question 5

You’re about to perform routine venipuncture on a patient with no known allergy to antiseptics. Which of the following substances would you use to clean the site?

A. 5.25% sodium hypochlorite
B. 70% isopropyl alcohol
C. Antibacterial soap and water
D. Povidone-iodine

Answer 5

B. 70% isopropyl alcohol

Question 6

Which of the following needles has the largest diameter?

A. 18-guage
B. 20-guage
C. 21-guage
D. 23-guage

Answer 6

A. 18-guage

Question 7

What causes evacuated tubes to fill with blood automatically?

A. Arterial blood pressure
B. Fist pumping by the patient
C. Pressure from the tourniquet
D. Premeaured tube vaccume

Answer 7

D. Premeasured tube vaccume

Question 8

Lavender-top tubes are most commonly used to collect:

A. Chemistry tests
B. Coagulation specimens
C. Hematology tests
D. Immunology tests

Answer 8

C. Hematology tests

Question 9

A butterfly is typically used for:

A. Coagulation specimens
B. Difficult and hand veins
C. Draws from a basilic vein
D. All of the above

Answer 9

B. Difficult and hand veins

Question 10

EDTA can be found in:

A. Lavender-top tubes
B. Purple-top tubes
C. White-top tubes
D. All of the above

Answer 10

D. All of the above

Question 11

Blood in which type of tube normally clots within 5 minutes?

A. PST
B. RST
C. SPS
D. SST

Answer 11

B RST

Question 12

Which of the following is a biocide?

A. 70% isopropanol
B. Hydrogen peroxide
C. Povidone-iodine
D. All of the above

Answer 12

D. All of the above

Question 13

Mixing an additive correctly involves turning the wrist how many degrees and back again?

A. 45
B. 90
C. 120
D. 180

Answer 13

D. 180

Question 14

Of the following tubes or containers, which is filled last in the recommended order of draw?

A. Blood culture bottle
B lavender top
C. Light blue top
D. Red top

Answer 14

B. Lavender top

Question 15

A green colored stopper indicates the tube contains:

A. Citrate
B. EDTA
C. Heparin
D. Oxalate

Answer 15

C. Heparin

Question 16

A trace element free tube stopper is:

A. Green/gray
B. Lavender
C. Royal blue
D. Yellow

Answer 16

C. Royal blue

Question 17

If a CBC, PT, plasma potassium, and glucose (drawn with a glycolysis inhibitor) are all to he collected during a multiple-tube draw on a patient, which of the following choices shows the correct stopper colors to use in the correct order of draw?

A. Lavender, light blue, gold, green
B. Light blue, green, lavender, gray
C. Red, royal blue, green, lavender
D yellow, orange, lavender, gray

Answer 17

B. Light blue, green, lavender, gray

Question 18

Thixotropic gel is found in:

A. PPTs
B. PSTs
C. SSTs
D. All of the above

Answer 18

D. All of the above

Question 19

A transillumination device is used for:

A. Contain sharps
B. ID patients
C. Locate veins
D. Transfer blood

Answer 19

C. Locate veins

Question 20

The ratio of blood to anticoagulant is most critical for:

A. Coagulation specimens
B. Light blue stoppers
C. Sodium citrate tubes
D. All of the above

Answer 20

D. All of the above