Phlebotomy Practice Exam Questions with 100% Correct
Answers Verified | Updated 2024/2025
This complication results from repeated venipuncture of the same vein, what is
it?
Phlebitis
The additive in the red/gray speckled collection tube also known as a Gold/SST is
what?
Thixotropic gel and silica
What does CMP stand for?
Comprehensive metabolic panel
The phlebotomist was sent to the ward to draw blood for coagulation studies.
What does the phlebotomist need to do?
Fill a light blue tube to the top.
When you spin the blood in a gray top tube, which contains an anticoagulant,
what is the resulting fluid portion?
Plasma
The additive in a gray collection tube is what?
Potassium oxalate and sodium flouride
How much blood is found in the average adult body?
5-7 liters
What step should a phlebotomist take if blood was drawn from the wrong
patient?
Immediately report the incident to the supervisor for corrective action.
When blood is found in the urine of a patient it is defined as what?
Hematuria
A patient was rushed to the emergency room because of dehydration due to
severe vomiting of 3 days duration. The ER physician orders a test for STAT
electrolytes and asks you to draw it. Which of the following tubes would the
phlebotomist use to to the collection?
Green-top tube
When the body has had adequate rest and no food for at least 12 hours, it is said
to be in what?
basal state
Which of the following samples would be best for the determination of blood
acidity and blood gases?
arterial blood
What is one of the most common complications from phlebotomy procedure?
Hematoma
Red-top tubes are also called "plain" tubes. Blood collected in these tubes will
clot by normal coagulation processes, how long will this process take?
30-60 minutes
The "butterfly" needle is another name for what?
Winged infusion set
What is the additive in a light blue top tube?
, Sodium citrate.
What is the term for destruction of red blood cells?
Hemolysis
A patient came to the clinic for a low-grade fever of one-month duration. As part
of the laboratory work-up, the physician ordered and erythrocyte sedimentation
rate (ESR). The phlebotomist on duty would draw the specimen using which
tube?
Lavender
When the tourniquet is tied too tight, capillaries rupture, what is the rupturing
called?
Petechiae
The boundaries for the approved area in performing hell punctures are what?
The medial line extending from the great toe and lateral line extending from the fourth
and fifth digit.
How far above the site of draw is the tourniquet placed?
4-6 inches.
Which of the following tubes is used for Prothrombin Time and Partial
Thromboplastin Time?
Light blue top tube
The phenylketonuria (PKU) test is used to diagnose deficiency of phenylalanine
hydroxylase; the most common clinically encountered inborn error of
metabolism. Where is it performed?
On a newborn's heel.
What is another name for red blood cells?
Erythrocytes
What is the proper way to dispose of a needle?
Put it into a sharps container, SAFETY CAPPED, after withdrawing it from the patient's
arm.
Is a 23-gauge needle smaller or larger than a 21-gauge needle?
Smaller.
What is the tube for glucose testing?
Gray-top tube.
A patient has been taking aspiring for arthritis. What will most likely be effected?
Bleeding time.
Every spring, Peter Fitzwell suffers from severe allergies. What would be the
picture of his WBC differential count?
Increased eosinophils.
If a patient verbally or physically refuses a venipuncture procedure, the
phlebotomist should do what?
Immediately report the refusal and actions taken to their supervisor.
Which tubes are used to collect specimen for coagulation studies?
Red, SST, and Royal Blue (R)
What do you call a microorganism that causes disease?
Pathogenic.
An obese patient was sent to the laboratory for a complete blood count. Which
vein is most likely to be the only one that the phlebotomist can palpate?
Answers Verified | Updated 2024/2025
This complication results from repeated venipuncture of the same vein, what is
it?
Phlebitis
The additive in the red/gray speckled collection tube also known as a Gold/SST is
what?
Thixotropic gel and silica
What does CMP stand for?
Comprehensive metabolic panel
The phlebotomist was sent to the ward to draw blood for coagulation studies.
What does the phlebotomist need to do?
Fill a light blue tube to the top.
When you spin the blood in a gray top tube, which contains an anticoagulant,
what is the resulting fluid portion?
Plasma
The additive in a gray collection tube is what?
Potassium oxalate and sodium flouride
How much blood is found in the average adult body?
5-7 liters
What step should a phlebotomist take if blood was drawn from the wrong
patient?
Immediately report the incident to the supervisor for corrective action.
When blood is found in the urine of a patient it is defined as what?
Hematuria
A patient was rushed to the emergency room because of dehydration due to
severe vomiting of 3 days duration. The ER physician orders a test for STAT
electrolytes and asks you to draw it. Which of the following tubes would the
phlebotomist use to to the collection?
Green-top tube
When the body has had adequate rest and no food for at least 12 hours, it is said
to be in what?
basal state
Which of the following samples would be best for the determination of blood
acidity and blood gases?
arterial blood
What is one of the most common complications from phlebotomy procedure?
Hematoma
Red-top tubes are also called "plain" tubes. Blood collected in these tubes will
clot by normal coagulation processes, how long will this process take?
30-60 minutes
The "butterfly" needle is another name for what?
Winged infusion set
What is the additive in a light blue top tube?
, Sodium citrate.
What is the term for destruction of red blood cells?
Hemolysis
A patient came to the clinic for a low-grade fever of one-month duration. As part
of the laboratory work-up, the physician ordered and erythrocyte sedimentation
rate (ESR). The phlebotomist on duty would draw the specimen using which
tube?
Lavender
When the tourniquet is tied too tight, capillaries rupture, what is the rupturing
called?
Petechiae
The boundaries for the approved area in performing hell punctures are what?
The medial line extending from the great toe and lateral line extending from the fourth
and fifth digit.
How far above the site of draw is the tourniquet placed?
4-6 inches.
Which of the following tubes is used for Prothrombin Time and Partial
Thromboplastin Time?
Light blue top tube
The phenylketonuria (PKU) test is used to diagnose deficiency of phenylalanine
hydroxylase; the most common clinically encountered inborn error of
metabolism. Where is it performed?
On a newborn's heel.
What is another name for red blood cells?
Erythrocytes
What is the proper way to dispose of a needle?
Put it into a sharps container, SAFETY CAPPED, after withdrawing it from the patient's
arm.
Is a 23-gauge needle smaller or larger than a 21-gauge needle?
Smaller.
What is the tube for glucose testing?
Gray-top tube.
A patient has been taking aspiring for arthritis. What will most likely be effected?
Bleeding time.
Every spring, Peter Fitzwell suffers from severe allergies. What would be the
picture of his WBC differential count?
Increased eosinophils.
If a patient verbally or physically refuses a venipuncture procedure, the
phlebotomist should do what?
Immediately report the refusal and actions taken to their supervisor.
Which tubes are used to collect specimen for coagulation studies?
Red, SST, and Royal Blue (R)
What do you call a microorganism that causes disease?
Pathogenic.
An obese patient was sent to the laboratory for a complete blood count. Which
vein is most likely to be the only one that the phlebotomist can palpate?
