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NPS PHLEBOTOMY EXAM 2026 (2 DIFFERENT
VERSIONS) | COMPLETE QUESTIONS AND 100%
CORRECT ANSWERS | GRADED A+ | VERIFIED
ANSWERS | GUARANTEE PASS
Q1.
A patient arrives for routine blood work. You must select the vein that is
easiest to palpate, least likely to roll, and carries the lowest risk of
complications.
Which vein should be chosen for venipuncture in the antecubital fossa?
A) Basilic vein
B) Cephalic vein
C) Median cubital vein
D) Radial vein
Correct Answer: C) Median cubital vein
Rationale: The median cubital vein is considered the safest and most
reliable vein for venipuncture. It is usually large, superficial, and stable,
making it easier to puncture with minimal discomfort. Compared to the
basilic vein, it has fewer nearby nerves and arteries, and compared to the
cephalic vein, it is more centrally located and accessible. This reduces risks
such as nerve injury, arterial puncture, or hematoma formation.
Q2.
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When drawing multiple tubes in the correct order of draw, the phlebotomist
must collect the blood culture bottles before any other tubes.
What is the primary reason for this sequence?
A) To reduce patient discomfort
B) To prevent cross-contamination from additives
C) To ensure faster processing in the lab
D) To avoid hemolysis during collection
Correct Answer: B) To prevent cross-contamination from additives
Rationale: Blood cultures are highly sensitive to contamination, and
collecting them first ensures that no anticoagulants or clot activators from
other tubes interfere with microbial growth. If collected later, even small
amounts of additives can yield false results, leading to misdiagnosis of
infections such as bacteremia or sepsis. Therefore, blood cultures always
come first in the order of draw to preserve test accuracy.
Q3.
A physician orders a complete blood count (CBC) for a patient. You select a
lavender-top tube for collection.
What is the function of the additive in this tube?
A) Prevents clotting by inhibiting thrombin
B) Preserves cell morphology by binding calcium
C) Promotes rapid clot formation for serum testing
D) Neutralizes bacterial contamination in blood samples
Correct Answer: B) Preserves cell morphology by binding calcium
Rationale: The lavender-top tube contains EDTA, which acts as an
anticoagulant by binding calcium, a key factor in the clotting cascade. This
prevents clot formation while maintaining the structural integrity of blood
cells. This preservation allows accurate counts of red cells, white cells, and
platelets in hematology tests such as the CBC. Using another tube could
compromise the sample, leading to inaccurate results.
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Q4.
Before beginning venipuncture, the phlebotomist must confirm the patient’s
identity using two identifiers.
Why is this step considered the most critical in the procedure?
A) It ensures the correct test requisition is followed.
B) It prevents drawing from the wrong patient.
C) It speeds up laboratory processing.
D) It helps the patient remain calm during the procedure.
Correct Answer: B) It prevents drawing from the wrong patient
Rationale: Patient identification is the top safety priority in phlebotomy.
Drawing from the wrong patient can cause severe consequences, such as
misdiagnosis, incorrect treatments, or even life-threatening transfusion
errors. Verifying at least two identifiers, such as full name and date of birth,
ensures accuracy. While the other steps are important, they are secondary to
confirming the right patient before collecting any specimen.
Q5.
A phlebotomist collects a tube with anticoagulant. After drawing, they
gently invert the tube several times.
Why is immediate inversion of these tubes necessary?
A) To activate clotting factors in the blood
B) To prevent hemolysis by mixing quickly
C) To mix blood with additives and prevent clots
D) To increase plasma yield during centrifugation
Correct Answer: C) To mix blood with additives and prevent clots
Rationale: Anticoagulant tubes must be inverted gently after collection so
the additive can properly mix with the blood. This prevents the formation of
clots that would make the sample unsuitable for testing. Vigorous shaking
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should be avoided, as it may cause hemolysis. Proper inversion ensures the
sample remains viable for accurate laboratory analysis and avoids the need
for repeat venipuncture.
Q6.
A patient is scheduled for a fasting glucose test. You enter the room and
notice the patient drinking coffee with cream and sugar.
What is the correct action?
A) Proceed with the collection since coffee is not food
B) Delay the collection and notify the nurse/physician
C) Collect the specimen and label it as “non-fasting”
D) Cancel the test without informing anyone
Correct Answer: B) Delay the collection and notify the nurse/physician
Rationale: A fasting glucose test requires that the patient not consume food
or caloric drinks before collection, as this would falsely elevate glucose
levels. Since the patient drank coffee with sugar and cream, the fasting
requirement is broken. The phlebotomist must not proceed but should notify
the nurse or physician for further instructions. Collecting anyway would
yield inaccurate results and could affect medical decisions.
Q7.
Which of the following is the correct angle of needle insertion for routine
venipuncture in the antecubital fossa?
A) 15–30 degrees
B) 45–60 degrees
C) 5–10 degrees
D) 60–75 degrees
Correct Answer: A) 15–30 degrees
NPS PHLEBOTOMY EXAM 2026 (2 DIFFERENT
VERSIONS) | COMPLETE QUESTIONS AND 100%
CORRECT ANSWERS | GRADED A+ | VERIFIED
ANSWERS | GUARANTEE PASS
Q1.
A patient arrives for routine blood work. You must select the vein that is
easiest to palpate, least likely to roll, and carries the lowest risk of
complications.
Which vein should be chosen for venipuncture in the antecubital fossa?
A) Basilic vein
B) Cephalic vein
C) Median cubital vein
D) Radial vein
Correct Answer: C) Median cubital vein
Rationale: The median cubital vein is considered the safest and most
reliable vein for venipuncture. It is usually large, superficial, and stable,
making it easier to puncture with minimal discomfort. Compared to the
basilic vein, it has fewer nearby nerves and arteries, and compared to the
cephalic vein, it is more centrally located and accessible. This reduces risks
such as nerve injury, arterial puncture, or hematoma formation.
Q2.
,2|Page
When drawing multiple tubes in the correct order of draw, the phlebotomist
must collect the blood culture bottles before any other tubes.
What is the primary reason for this sequence?
A) To reduce patient discomfort
B) To prevent cross-contamination from additives
C) To ensure faster processing in the lab
D) To avoid hemolysis during collection
Correct Answer: B) To prevent cross-contamination from additives
Rationale: Blood cultures are highly sensitive to contamination, and
collecting them first ensures that no anticoagulants or clot activators from
other tubes interfere with microbial growth. If collected later, even small
amounts of additives can yield false results, leading to misdiagnosis of
infections such as bacteremia or sepsis. Therefore, blood cultures always
come first in the order of draw to preserve test accuracy.
Q3.
A physician orders a complete blood count (CBC) for a patient. You select a
lavender-top tube for collection.
What is the function of the additive in this tube?
A) Prevents clotting by inhibiting thrombin
B) Preserves cell morphology by binding calcium
C) Promotes rapid clot formation for serum testing
D) Neutralizes bacterial contamination in blood samples
Correct Answer: B) Preserves cell morphology by binding calcium
Rationale: The lavender-top tube contains EDTA, which acts as an
anticoagulant by binding calcium, a key factor in the clotting cascade. This
prevents clot formation while maintaining the structural integrity of blood
cells. This preservation allows accurate counts of red cells, white cells, and
platelets in hematology tests such as the CBC. Using another tube could
compromise the sample, leading to inaccurate results.
,3|Page
Q4.
Before beginning venipuncture, the phlebotomist must confirm the patient’s
identity using two identifiers.
Why is this step considered the most critical in the procedure?
A) It ensures the correct test requisition is followed.
B) It prevents drawing from the wrong patient.
C) It speeds up laboratory processing.
D) It helps the patient remain calm during the procedure.
Correct Answer: B) It prevents drawing from the wrong patient
Rationale: Patient identification is the top safety priority in phlebotomy.
Drawing from the wrong patient can cause severe consequences, such as
misdiagnosis, incorrect treatments, or even life-threatening transfusion
errors. Verifying at least two identifiers, such as full name and date of birth,
ensures accuracy. While the other steps are important, they are secondary to
confirming the right patient before collecting any specimen.
Q5.
A phlebotomist collects a tube with anticoagulant. After drawing, they
gently invert the tube several times.
Why is immediate inversion of these tubes necessary?
A) To activate clotting factors in the blood
B) To prevent hemolysis by mixing quickly
C) To mix blood with additives and prevent clots
D) To increase plasma yield during centrifugation
Correct Answer: C) To mix blood with additives and prevent clots
Rationale: Anticoagulant tubes must be inverted gently after collection so
the additive can properly mix with the blood. This prevents the formation of
clots that would make the sample unsuitable for testing. Vigorous shaking
, 4|Page
should be avoided, as it may cause hemolysis. Proper inversion ensures the
sample remains viable for accurate laboratory analysis and avoids the need
for repeat venipuncture.
Q6.
A patient is scheduled for a fasting glucose test. You enter the room and
notice the patient drinking coffee with cream and sugar.
What is the correct action?
A) Proceed with the collection since coffee is not food
B) Delay the collection and notify the nurse/physician
C) Collect the specimen and label it as “non-fasting”
D) Cancel the test without informing anyone
Correct Answer: B) Delay the collection and notify the nurse/physician
Rationale: A fasting glucose test requires that the patient not consume food
or caloric drinks before collection, as this would falsely elevate glucose
levels. Since the patient drank coffee with sugar and cream, the fasting
requirement is broken. The phlebotomist must not proceed but should notify
the nurse or physician for further instructions. Collecting anyway would
yield inaccurate results and could affect medical decisions.
Q7.
Which of the following is the correct angle of needle insertion for routine
venipuncture in the antecubital fossa?
A) 15–30 degrees
B) 45–60 degrees
C) 5–10 degrees
D) 60–75 degrees
Correct Answer: A) 15–30 degrees
