Question 1

The most common phlebotomy site(s) 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. C

Question 2

The proper procedure for collecting a serum specimen is to

Accepted Answer

A)  use a green-topped tube. 
B)  allow the specimen to clot. 
C)  use a microhematocrit tube. 
D)  use a red or marbled-top tube. 
E)  B and D. 
A)  use a green-topped tube. 
B)  allow the specimen to clot. 
C)  use a microhematocrit tube. 
D)  use a red or marbled-top tube. 
E)  B and D. E

Question 3

The laboratory requisition indicates that you are to collect a venous blood specimen for hematology testing, serum chemistry testing, and coagulation studies. What is the proper order of collection for these tubes?

Accepted Answer

A)  Red, light blue, lavender 
B)  Yellow, red, light blue 
C)  Light blue, red, lavender 
D)  Two lavender, one red 
A)  Red, light blue, lavender 
B)  Yellow, red, light blue 
C)  Light blue, red, lavender 
D)  Two lavender, one red C

Question 4

All Vacutainer tubes should be inverted three to five times to mix the blood sample with the tube additive.

Accepted Answer

A) True 
 B)False

Question 5

Describe the steps medical assistants must take to protect themselves and co-workers against needle-stick injuries.

Accepted Answer

Do not use needles w

Question 6

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 7

The tourniquet should be left tied on the arm no longer than 1 minute.

Accepted Answer

A) True 
 B)False

Question 8

Under OSHA guidelines, needle holders for Vacutainers can be reused for multiple patients, because they are not contaminated during the blood draw.

Accepted Answer

A) True 
 B)False

Question 9

Light blue tubes for coagulation studies should be inverted how many times following removal and prior to placing them in the rack?

Accepted Answer

A)  Two times 
B)  Three or four times 
C)  Five times 
D)  Eight to ten times 
A)  Two times 
B)  Three or four times 
C)  Five times 
D)  Eight to ten times

Question 10

Which type of tube should be used to collect blood specimens during a glucose tolerance test?

Accepted Answer

A)  Lavender topped 
B)  Red topped 
C)  Gray topped 
D)  Yellow topped 
A)  Lavender topped 
B)  Red topped 
C)  Gray topped 
D)  Yellow topped

Question 11

With regard to venipuncture needles, the smaller the gauge number, the larger the lumen of the needle.

Accepted Answer

A) True 
 B)False

Question 12

During a routine venipuncture, when should the phlebotomist request that the patient "make a fist"?

Accepted Answer

A)  After applying the tourniquet and before inserting the needle 
B)  After the last tube has been drawn 
C)  After the procedure is finished and the gauze has been applied so that bleeding stops 
D)  Only if a tourniquet is not used 
A)  After applying the tourniquet and before inserting the needle 
B)  After the last tube has been drawn 
C)  After the procedure is finished and the gauze has been applied so that bleeding stops 
D)  Only if a tourniquet is not used

Question 13

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 14

The needle size most commonly used for adult venipuncture is _____ gauge.

Accepted Answer

A)  18 
B)  10 
C)  12 
D)  21 
A)  18 
B)  10 
C)  12 
D)  21

Question 15

The needle size most commonly used in infants and the elderly is _____ gauge.

Accepted Answer

A)  16 
B)  23 
C)  35 
D)  21 
A)  16 
B)  23 
C)  35 
D)  21

Question 16

What is the most common cause of hematoma formation during a blood draw?

Accepted Answer

A)  Excessive probing with the needle to locate a vein 
B)  Failure to remove the tourniquet before removing the needle 
C)  Failure to withdraw the vacuum tube before the needle is withdrawn 
D)  Elbow is bent while pressure is applied 
A)  Excessive probing with the needle to locate a vein 
B)  Failure to remove the tourniquet before removing the needle 
C)  Failure to withdraw the vacuum tube before the needle is withdrawn 
D)  Elbow is bent while pressure is applied

Question 17

According to the American Society of Clinical Pathologists, nearly 80% of physicians' decisions are based on laboratory test results.

Accepted Answer

A) True 
 B)False

Question 18

The clear part of whole blood that contains clotting agents is

Accepted Answer

A)  plasma. 
B)  blood cells. 
C)  serum. 
D)  hemoglobin. 
E)  B and D. 
A)  plasma. 
B)  blood cells. 
C)  serum. 
D)  hemoglobin. 
E)  B and D.

Question 19

A(n) ___________ is applied to the skin 30 to 60 seconds before the blood draw to prevent infection at the puncture site.

Accepted Answer

The answer of A(n) ___________ is applied to the skin...

Question 20

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

Accepted Answer

A) True 
 B)False

Exam 46: Assisting in Blood Collection

The most common phlebotomy site(s) in adults is (are) the

The proper procedure for collecting a serum specimen is to

The laboratory requisition indicates that you are to collect a venous blood specimen for hematology testing, serum chemistry testing, and coagulation studies. What is the proper order of collection for these tubes?

All Vacutainer tubes should be inverted three to five times to mix the blood sample with the tube additive.

Describe the steps medical assistants must take to protect themselves and co-workers against needle-stick injuries.

Which is the proper technique for performing a venipuncture?

The tourniquet should be left tied on the arm no longer than 1 minute.

Under OSHA guidelines, needle holders for Vacutainers can be reused for multiple patients, because they are not contaminated during the blood draw.

Light blue tubes for coagulation studies should be inverted how many times following removal and prior to placing them in the rack?

Which type of tube should be used to collect blood specimens during a glucose tolerance test?

With regard to venipuncture needles, the smaller the gauge number, the larger the lumen of the needle.

During a routine venipuncture, when should the phlebotomist request that the patient "make a fist"?

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?

The needle size most commonly used for adult venipuncture is _____ gauge.

The needle size most commonly used in infants and the elderly is _____ gauge.

What is the most common cause of hematoma formation during a blood draw?

According to the American Society of Clinical Pathologists, nearly 80% of physicians' decisions are based on laboratory test results.

The clear part of whole blood that contains clotting agents is

A(n) ___________ is applied to the skin 30 to 60 seconds before the blood draw to prevent infection at the puncture site.

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

Competency-Based Education and the Medical Assistant Student

The Medical Assistant and the Healthcare Team

Professional Behavior in the Workplace

Therapeutic Communications

Medicine and Law

Medicine and Ethics

Technology and Written Communication in the Medical Office

Telephone Techniques

Scheduling Appointments and Patient Processing

Daily Operations in the Ambulatory Care Setting

The Health Record

Basics of Diagnostic Coding

Basics of Procedural Coding

Basics of Health Insurance

Medical Billing and Reimbursement

Patient Accounts, Collections, and Practice Management

Banking Services and Procedures

Supervision and Human Resources Management

Medical Practice Marketing and Customer Service

Infection Control

Patient Assessment

Patient Education

Nutrition and Health Promotion

Vital Signs

Assisting With the Primary Physical Examination

Principles of Pharmacology

Pharmacology Math

Administering Medications

Safety and Emergency Practices

Assisting in Ophthalmology and Otolaryngology

Assisting in Dermatology

Assisting in Gastroenterology

Assisting in Urology and Male Reproduction

Assisting in Obstetrics and Gynecology

Assisting in Pediatrics

Assisting in Orthopedic Medicine

Assisting in Neurology and Mental Health

Assisting in Endocrinology

Assisting in Pulmonary Medicine

Assisting in Cardiology

Assisting in Geriatrics

Principles of Electrocardiography

Assisting With Diagnostic Imaging

Assisting in the Clinical Laboratory

Assisting in the Analysis of Urine

Assisting in the Analysis of Blood

Assisting in Microbiology and Immunology

Surgical Supplies and Instruments

Surgical Asepsis and Assisting With Surgical Procedures

Career Development and Life Skills

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