ACTUAL EXAM – 100 QUESTIONS AND CORRECT DETAILED
ANSWERS | ALREADY GRADED A+
Question 1
Hemostasis refers to:
Correct Answer: Stoppage of bleeding
Question 2
Which of the following veins is not an antecubital vein?
Correct Answer: Femoral (median, cephalic, and basilic are the antecubital veins,
listed in preference to draw from)
Question 3
Which test must be performed on whole blood?
Correct Answer: CBC (complete blood count)
Question 4
A major difference between arteries and veins is that most veins:
Correct Answer: Have one way valves
Question 5
Which of the following is best to collect an ethanol sample?
Correct Answer: Sodium Fluoride
Question 6
Which needle gauge has the largest lumen?
Correct Answer: 18 (smaller number = larger lumen and vice versa)
Pg. 1
,Question 7
Specimens for these tests are usually collected in light blue top tubes:
Correct Answer: Coagulation
Question 8
A tube with a green stopper usually contains:
Correct Answer: Heparin (an anticoagulant)
Question 9
The purpose of an antiglycolytic agent is to:
Correct Answer: Preserve glucose (antiglycolytic agents are the additives in gray
top tubes)
Question 10
The solution normally used to clean the site before a routine venipuncture is:
Correct Answer: 70% isopropanol
Question 11
When a tourniquet becomes soiled with blood it is best to:
Correct Answer: Throw it away
Question 12
What is the most important factor to consider when choosing which gauge needle
to use for a venipuncture?
Correct Answer: The size and condition of the vein (smaller needle/larger gauge
like 22 or 23 used for smaller more fragile veins)
Question 13
Which additive is present in tubes with a lavender stopper?
Correct Answer: EDTA
Pg. 2
, Question 14
Glass particles in SSTs (serum separator tubes):
Correct Answer: Enhance clotting (ensure more complete clotting but do not
actually speed up clotting process)
Question 15
The slanted top of the needle that enters the vein is called the:
Correct Answer: Bevel
Question 16
According to CLSI standards, which tube is filled last when using a syringe?
Correct Answer: EDTA (lavender top)
Question 17
True or False: EDTA is the most common source of carryover problems.
Correct Answer: True
Question 18
True or False: The 21 gauge multisample needle is considered the standard needle
for routine venipuncture.
Correct Answer: True
Question 19
True or False: In routine venipuncture using an ETS the red tube should be drawn
before the green tube.
Correct Answer: True
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