Ohio School of Phlebotomy Final (131 Questions with
100% Correct Answers)
Course
Phlebotomy
Question 1
Q: What is the primary role of a phlebotomist?
A: The primary role of a phlebotomist is to draw blood from patients for various laboratory
tests and procedures.
Rationale: Phlebotomists are trained professionals responsible for collecting blood samples,
ensuring proper techniques to minimize patient discomfort and ensure sample integrity for
accurate lab results.
Question 2
Q: What is the most commonly used vein for venipuncture?
A: The median cubital vein is the most commonly used vein for venipuncture.
Rationale: The median cubital vein is typically larger and more centrally located in the arm,
making it more accessible and reducing the risk of complications during blood collection.
Question 3
Q: Why is it important to use a tourniquet during venipuncture?
A: A tourniquet is used to temporarily restrict blood flow, making veins more prominent for
easier access.
Rationale: By slowing blood flow, the tourniquet helps the veins to engorge with blood,
making them easier to see and palpate, thus facilitating a successful draw.
Question 4
Q: What should a phlebotomist do if a patient feels faint during the blood draw?
A: The phlebotomist should immediately stop the procedure, ensure the patient is in a safe
position, and provide assistance.
,Rationale: Safety is the priority; the phlebotomist should ensure the patient is lying down or
sitting and offer support. Monitoring vital signs and providing reassurance is also essential.
Question 5
Q: What is the appropriate action if a blood sample is hemolyzed?
A: If a blood sample is hemolyzed, it should be discarded and a new sample collected.
Rationale: Hemolysis can alter test results, leading to inaccurate diagnoses. It may occur due
to improper handling or drawing techniques, necessitating a new sample to ensure reliability.
Question 6
Q: Which of the following is a potential complication of venipuncture?
A: Hematoma formation.
Rationale: A hematoma can occur when blood leaks into the surrounding tissue due to
damage to the vein during the puncture. This is a common complication that phlebotomists
should be prepared to manage.
Question 7
Q: What is the purpose of labeling blood samples immediately after collection?
A: To ensure accurate identification and prevent sample mix-ups.
Rationale: Proper labeling, which includes the patient's name, date of birth, and collection
time, is critical for traceability and accuracy in laboratory testing, reducing the risk of
diagnostic errors.
Question 8
Q: Why is it important to invert tubes containing anticoagulants after blood collection?
A: Inverting tubes helps mix the blood with the anticoagulant to prevent clotting.
Rationale: Proper mixing ensures that the anticoagulant works effectively, preserving the
sample for accurate testing. Failure to invert can lead to clot formation and compromised test
results.
,Question 9
Q: What is the role of personal protective equipment (PPE) in phlebotomy?
A: PPE is used to protect phlebotomists and patients from exposure to bloodborne pathogens.
Rationale: The use of gloves, masks, and gowns minimizes the risk of contamination and
infection, ensuring safety during blood collection procedures.
Question 10
Q: What is the correct order of draw for venipuncture?
A: The correct order of draw is: blood culture, light blue, red, gold/tiger top, green, lavender,
and gray.
Rationale: Following the correct order of draw prevents cross-contamination of additives
from different tubes, which can affect test results. Each type of tube contains specific
additives that can interfere with tests if mixed improperly.
Question 11
Q: What is the maximum time a tourniquet should be left on during venipuncture?
A: A tourniquet should not be left on for more than one minute.
Rationale: Leaving a tourniquet on for too long can lead to hemoconcentration, which may
alter test results by affecting the concentration of various substances in the blood.
Question 12
Q: What type of needle is typically used for routine venipuncture?
A: A 21-gauge needle is typically used for routine venipuncture.
Rationale: A 21-gauge needle strikes a balance between sufficient size for blood flow and
minimizing discomfort for the patient, making it a common choice in phlebotomy.
Question 13
Q: What should a phlebotomist do if they accidentally stick themselves with a used needle?
, A: The phlebotomist should wash the area with soap and water, report the incident, and
follow the facility’s exposure protocol.
Rationale: Immediate washing helps reduce the risk of infection, and reporting ensures that
proper follow-up and monitoring are provided in accordance with safety protocols.
Question 14
Q: Which test requires the use of a lavender-top tube?
A: A complete blood count (CBC) requires the use of a lavender-top tube.
Rationale: Lavender-top tubes contain EDTA, an anticoagulant that prevents clotting,
making it suitable for tests like CBC that require whole blood.
Question 15
Q: What is the purpose of using alcohol swabs before venipuncture?
A: Alcohol swabs are used to disinfect the puncture site to reduce the risk of infection.
Rationale: Disinfection is crucial to prevent contamination and ensure the safety of both the
patient and the specimen, as bacteria present on the skin can compromise test results.
Question 16
Q: How should a phlebotomist position a patient for a blood draw?
A: The patient should be seated comfortably with their arm extended and supported.
Rationale: Proper positioning helps reduce anxiety for the patient and allows for easier
access to the veins, thereby increasing the likelihood of a successful blood draw.
Question 17
Q: What does the term "stat" mean when used in a medical context?
A: "Stat" means that the laboratory test or procedure should be performed immediately.
Rationale: The term "stat" indicates urgency and is often used in critical situations where
prompt results are necessary for diagnosis or treatment.
100% Correct Answers)
Course
Phlebotomy
Question 1
Q: What is the primary role of a phlebotomist?
A: The primary role of a phlebotomist is to draw blood from patients for various laboratory
tests and procedures.
Rationale: Phlebotomists are trained professionals responsible for collecting blood samples,
ensuring proper techniques to minimize patient discomfort and ensure sample integrity for
accurate lab results.
Question 2
Q: What is the most commonly used vein for venipuncture?
A: The median cubital vein is the most commonly used vein for venipuncture.
Rationale: The median cubital vein is typically larger and more centrally located in the arm,
making it more accessible and reducing the risk of complications during blood collection.
Question 3
Q: Why is it important to use a tourniquet during venipuncture?
A: A tourniquet is used to temporarily restrict blood flow, making veins more prominent for
easier access.
Rationale: By slowing blood flow, the tourniquet helps the veins to engorge with blood,
making them easier to see and palpate, thus facilitating a successful draw.
Question 4
Q: What should a phlebotomist do if a patient feels faint during the blood draw?
A: The phlebotomist should immediately stop the procedure, ensure the patient is in a safe
position, and provide assistance.
,Rationale: Safety is the priority; the phlebotomist should ensure the patient is lying down or
sitting and offer support. Monitoring vital signs and providing reassurance is also essential.
Question 5
Q: What is the appropriate action if a blood sample is hemolyzed?
A: If a blood sample is hemolyzed, it should be discarded and a new sample collected.
Rationale: Hemolysis can alter test results, leading to inaccurate diagnoses. It may occur due
to improper handling or drawing techniques, necessitating a new sample to ensure reliability.
Question 6
Q: Which of the following is a potential complication of venipuncture?
A: Hematoma formation.
Rationale: A hematoma can occur when blood leaks into the surrounding tissue due to
damage to the vein during the puncture. This is a common complication that phlebotomists
should be prepared to manage.
Question 7
Q: What is the purpose of labeling blood samples immediately after collection?
A: To ensure accurate identification and prevent sample mix-ups.
Rationale: Proper labeling, which includes the patient's name, date of birth, and collection
time, is critical for traceability and accuracy in laboratory testing, reducing the risk of
diagnostic errors.
Question 8
Q: Why is it important to invert tubes containing anticoagulants after blood collection?
A: Inverting tubes helps mix the blood with the anticoagulant to prevent clotting.
Rationale: Proper mixing ensures that the anticoagulant works effectively, preserving the
sample for accurate testing. Failure to invert can lead to clot formation and compromised test
results.
,Question 9
Q: What is the role of personal protective equipment (PPE) in phlebotomy?
A: PPE is used to protect phlebotomists and patients from exposure to bloodborne pathogens.
Rationale: The use of gloves, masks, and gowns minimizes the risk of contamination and
infection, ensuring safety during blood collection procedures.
Question 10
Q: What is the correct order of draw for venipuncture?
A: The correct order of draw is: blood culture, light blue, red, gold/tiger top, green, lavender,
and gray.
Rationale: Following the correct order of draw prevents cross-contamination of additives
from different tubes, which can affect test results. Each type of tube contains specific
additives that can interfere with tests if mixed improperly.
Question 11
Q: What is the maximum time a tourniquet should be left on during venipuncture?
A: A tourniquet should not be left on for more than one minute.
Rationale: Leaving a tourniquet on for too long can lead to hemoconcentration, which may
alter test results by affecting the concentration of various substances in the blood.
Question 12
Q: What type of needle is typically used for routine venipuncture?
A: A 21-gauge needle is typically used for routine venipuncture.
Rationale: A 21-gauge needle strikes a balance between sufficient size for blood flow and
minimizing discomfort for the patient, making it a common choice in phlebotomy.
Question 13
Q: What should a phlebotomist do if they accidentally stick themselves with a used needle?
, A: The phlebotomist should wash the area with soap and water, report the incident, and
follow the facility’s exposure protocol.
Rationale: Immediate washing helps reduce the risk of infection, and reporting ensures that
proper follow-up and monitoring are provided in accordance with safety protocols.
Question 14
Q: Which test requires the use of a lavender-top tube?
A: A complete blood count (CBC) requires the use of a lavender-top tube.
Rationale: Lavender-top tubes contain EDTA, an anticoagulant that prevents clotting,
making it suitable for tests like CBC that require whole blood.
Question 15
Q: What is the purpose of using alcohol swabs before venipuncture?
A: Alcohol swabs are used to disinfect the puncture site to reduce the risk of infection.
Rationale: Disinfection is crucial to prevent contamination and ensure the safety of both the
patient and the specimen, as bacteria present on the skin can compromise test results.
Question 16
Q: How should a phlebotomist position a patient for a blood draw?
A: The patient should be seated comfortably with their arm extended and supported.
Rationale: Proper positioning helps reduce anxiety for the patient and allows for easier
access to the veins, thereby increasing the likelihood of a successful blood draw.
Question 17
Q: What does the term "stat" mean when used in a medical context?
A: "Stat" means that the laboratory test or procedure should be performed immediately.
Rationale: The term "stat" indicates urgency and is often used in critical situations where
prompt results are necessary for diagnosis or treatment.
