Question 1

Which of the following Vacutainer tubes is routinely used for hematology testing?

Accepted Answer

A) Lavender topped 
B) Red topped 
C) Green topped 
D) Light blue topped 
A) Lavender topped 
B) Red topped 
C) Green topped 
D) Light blue topped A

Question 2

Capillary blood is a mixture of arterial blood and venous blood.

Accepted Answer

A) True 
 B)False  True

Question 3

The NCCLS has recommended that a red-topped "waste" tube be drawn before a light blue-topped Vacutainer tube, because thromboplastin released from cells during the venipuncture can interfere with coagulation tests.

Accepted Answer

A) True 
 B)False  True

Question 4

A winged infusion set is also known as a:

Accepted Answer

A) Hemagard tube 
B) Velcro tourniquet 
C) butterfly needle 
D) Luer adapter 
A) Hemagard tube 
B) Velcro tourniquet 
C) butterfly needle 
D) Luer adapter

Question 5

The most common phlebotomy site in adults is/are the:

Accepted Answer

A) radial vein 
B) brachial artery 
C) veins in the antecubital space 
D) veins in the popliteal area 
A) radial vein 
B) brachial artery 
C) veins in the antecubital space 
D) veins in the popliteal area

Question 6

A tourniquet should never be used when a venous blood sample is to be drawn from the hand.

Accepted Answer

A) True 
 B)False

Question 7

__________ are used for small veins, such as those in the hand or in a pediatric patient.

Accepted Answer

Butterfly needles
Butterfly ne

Question 8

The basilic vein is a common location for venipuncture procedures.

Accepted Answer

A) True 
 B)False

Question 9

List the information required on the laboratory requisition.

Accepted Answer

Requisitions may be computer generated o

Question 10

Leaving a tourniquet tied on a patient's arm for longer than the recommended time results in:

Accepted Answer

A) syncope 
B) hemoconcentration 
C) hematoma formation 
D) bifurcation 
A) syncope 
B) hemoconcentration 
C) hematoma formation 
D) bifurcation

Question 11

You are performing a capillary puncture on a patient and are having difficulty collecting an adequate sample.Which of the following is an accepted method to encourage blood flow from the site?

Accepted Answer

A) Squeeze the finger. 
B) Wrap the finger in a cool towel. 
C) Make a second puncture mark close to the first. 
D) Gently rub the finger along the sides. 
A) Squeeze the finger. 
B) Wrap the finger in a cool towel. 
C) Make a second puncture mark close to the first. 
D) Gently rub the finger along the sides.

Question 12

It is important to shake a Vacutainer tube after collecting a blood sample so that the sample and additive are properly mixed.

Accepted Answer

A) True 
 B)False

Question 13

Which is the proper technique for performing a venipuncture?

Accepted Answer

A) The needle bevel is face up, and the needle is inserted at a 15-degree angle. 
B) The needle bevel is face down, and the needle is inserted at a 15- to 30-degree angle. 
C) The needle bevel can be oriented in either direction, but the needle must be inserted at a low angle. 
D) The needle bevel is face up, and the needle is inserted at a 20- to 30-degree angle. 
A) The needle bevel is face up, and the needle is inserted at a 15-degree angle. 
B) The needle bevel is face down, and the needle is inserted at a 15- to 30-degree angle. 
C) The needle bevel can be oriented in either direction, but the needle must be inserted at a low angle. 
D) The needle bevel is face up, and the needle is inserted at a 20- to 30-degree angle.

Question 14

The needle size most commonly used by the blood bank for donations is _____ gauge.

Accepted Answer

A) 16 
B) 10 
C) 35 
D) 21 
A) 16 
B) 10 
C) 35 
D) 21

Question 15

If a hematoma forms while you are performing a blood draw, you should move the needle around until you have re-entered the vein.

Accepted Answer

A) True 
 B)False

Question 16

__________ is the liquid portion of the blood that contains clotting agents.

Accepted Answer

Plasma
Plasma is the

Question 17

The device used for dermal puncture is a(n):

Accepted Answer

A) Unopette 
B) lancet 
C) butterfly 
D) Vacutainer 
A) Unopette 
B) lancet 
C) butterfly 
D) Vacutainer

Question 18

A hematoma can be caused by:

Accepted Answer

A) excessive probing to locate a vein 
B) failure to insert the needle far enough into the vein 
C) penetration of the needle through a vein 
D) all of the above 
A) excessive probing to locate a vein 
B) failure to insert the needle far enough into the vein 
C) penetration of the needle through a vein 
D) all of the above

Question 19

A needle-stick is more likely to occur if:

Accepted Answer

A) an attempt is made to recap a needle 
B) a needle of inappropriate gauge is used 
C) a Vacutainer set is used to obtain a specimen 
D) needles are immediately retracted into a safety device after use 
E) all of the above 
A) an attempt is made to recap a needle 
B) a needle of inappropriate gauge is used 
C) a Vacutainer set is used to obtain a specimen 
D) needles are immediately retracted into a safety device after use 
E) all of the above

Question 20

A syringe is preferred over a Vacutainer collection device when:

Accepted Answer

A) the patient's veins are fragile 
B) the sample must be drawn from the hand veins 
C) many tests have been ordered, and multiple tubes must be drawn 
D) all of the above 
A) the patient's veins are fragile 
B) the sample must be drawn from the hand veins 
C) many tests have been ordered, and multiple tubes must be drawn 
D) all of the above

Exam 53: Assisting in Phlebotomy

Which of the following Vacutainer tubes is routinely used for hematology testing?

Capillary blood is a mixture of arterial blood and venous blood.

The NCCLS has recommended that a red-topped "waste" tube be drawn before a light blue-topped Vacutainer tube, because thromboplastin released from cells during the venipuncture can interfere with coagulation tests.

A winged infusion set is also known as a:

The most common phlebotomy site in adults is/are the:

A tourniquet should never be used when a venous blood sample is to be drawn from the hand.

__________ are used for small veins, such as those in the hand or in a pediatric patient.

The basilic vein is a common location for venipuncture procedures.

List the information required on the laboratory requisition.

Leaving a tourniquet tied on a patient's arm for longer than the recommended time results in:

You are performing a capillary puncture on a patient and are having difficulty collecting an adequate sample.Which of the following is an accepted method to encourage blood flow from the site?

It is important to shake a Vacutainer tube after collecting a blood sample so that the sample and additive are properly mixed.

Which is the proper technique for performing a venipuncture?

The needle size most commonly used by the blood bank for donations is _____ gauge.

If a hematoma forms while you are performing a blood draw, you should move the needle around until you have re-entered the vein.

__________ is the liquid portion of the blood that contains clotting agents.

The device used for dermal puncture is a(n):

A hematoma can be caused by:

A needle-stick is more likely to occur if:

A syringe is preferred over a Vacutainer collection device when:

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