PHLEBOTOMY CERTIFICATION
EXAMINATION QUESTIONS WITH
CORRECT ANSWERS PLUS
RATIONALES 2026/2027 EDITION
WITH INSTANT PDF DOWNLOAD
1. What is the primary purpose of venipuncture during routine
phlebotomy?
A. To administer medication
B. To obtain a blood specimen for laboratory testing
C. To measure blood pressure
D. To determine respiratory rate
Correct Answer: B. To obtain a blood specimen for laboratory
testing
Rationale: Venipuncture is performed primarily to collect blood
specimens for diagnostic laboratory analysis. Proper specimen
collection is essential because errors during collection can affect
test results and patient care.
2. Which vein is generally the first choice for routine venipuncture
in the antecubital area?
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 commonly preferred
because it is usually well anchored, relatively large, and less likely
to roll during needle insertion. Its location also generally makes it
easier to access safely.
3. What is the main purpose of applying a tourniquet before
venipuncture?
A. To stop arterial circulation
B. To increase venous filling and make the vein more prominent
C. To sterilize the puncture site
D. To reduce the patient's blood pressure
Correct Answer: B. To increase venous filling and make the
vein more prominent
Rationale: A tourniquet temporarily restricts venous return while
allowing arterial blood flow to continue. This causes the veins to
fill and become easier to locate and palpate.
4. Which antiseptic is commonly used to disinfect the skin before
routine venipuncture?
A. Sterile water
B. 70% isopropyl alcohol
C. Hydrogen peroxide only
D. Normal saline only
Correct Answer: B. 70% isopropyl alcohol
,Rationale: A 70% isopropyl alcohol preparation is commonly used
for routine venipuncture site disinfection. The site should be
allowed to air-dry completely before needle insertion.
5. What should a phlebotomist do immediately after removing the
needle from the patient?
A. Recap the needle
B. Place the needle directly into an approved sharps container
C. Place the needle on the work surface
D. Break the needle before disposal
Correct Answer: B. Place the needle directly into an approved
sharps container
Rationale: Used needles must be disposed of immediately in a
designated, puncture-resistant sharps container. Recapping,
bending, breaking, or manipulating used needles increases the
risk of needlestick injuries.
6. Which action is most important for preventing patient
identification errors?
A. Asking the patient to state their full name and another
appropriate identifier
B. Asking another patient to confirm the identity
C. Checking only the room number
D. Labeling tubes before approaching the patient
Correct Answer: A. Asking the patient to state their full name
and another appropriate identifier
, Rationale: Positive patient identification requires comparison of
appropriate identifiers with the laboratory request or identification
band. Room numbers alone are not reliable identifiers.
7. Which additive is typically found in a lavender-top blood
collection tube?
A. Sodium citrate
B. Heparin
C. EDTA
D. Sodium fluoride
Correct Answer: C. EDTA
Rationale: Lavender-top tubes generally contain EDTA, an
anticoagulant that prevents clotting by binding calcium. They are
commonly used for hematology testing such as complete blood
counts.
8. Which tube is commonly used for coagulation studies?
A. Light blue-top tube
B. Lavender-top tube
C. Gray-top tube
D. Green-top tube
Correct Answer: A. Light blue-top tube
Rationale: Light blue-top tubes contain sodium citrate and are
commonly used for coagulation testing. The correct blood-to-
anticoagulant ratio is important for accurate coagulation results.
EXAMINATION QUESTIONS WITH
CORRECT ANSWERS PLUS
RATIONALES 2026/2027 EDITION
WITH INSTANT PDF DOWNLOAD
1. What is the primary purpose of venipuncture during routine
phlebotomy?
A. To administer medication
B. To obtain a blood specimen for laboratory testing
C. To measure blood pressure
D. To determine respiratory rate
Correct Answer: B. To obtain a blood specimen for laboratory
testing
Rationale: Venipuncture is performed primarily to collect blood
specimens for diagnostic laboratory analysis. Proper specimen
collection is essential because errors during collection can affect
test results and patient care.
2. Which vein is generally the first choice for routine venipuncture
in the antecubital area?
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 commonly preferred
because it is usually well anchored, relatively large, and less likely
to roll during needle insertion. Its location also generally makes it
easier to access safely.
3. What is the main purpose of applying a tourniquet before
venipuncture?
A. To stop arterial circulation
B. To increase venous filling and make the vein more prominent
C. To sterilize the puncture site
D. To reduce the patient's blood pressure
Correct Answer: B. To increase venous filling and make the
vein more prominent
Rationale: A tourniquet temporarily restricts venous return while
allowing arterial blood flow to continue. This causes the veins to
fill and become easier to locate and palpate.
4. Which antiseptic is commonly used to disinfect the skin before
routine venipuncture?
A. Sterile water
B. 70% isopropyl alcohol
C. Hydrogen peroxide only
D. Normal saline only
Correct Answer: B. 70% isopropyl alcohol
,Rationale: A 70% isopropyl alcohol preparation is commonly used
for routine venipuncture site disinfection. The site should be
allowed to air-dry completely before needle insertion.
5. What should a phlebotomist do immediately after removing the
needle from the patient?
A. Recap the needle
B. Place the needle directly into an approved sharps container
C. Place the needle on the work surface
D. Break the needle before disposal
Correct Answer: B. Place the needle directly into an approved
sharps container
Rationale: Used needles must be disposed of immediately in a
designated, puncture-resistant sharps container. Recapping,
bending, breaking, or manipulating used needles increases the
risk of needlestick injuries.
6. Which action is most important for preventing patient
identification errors?
A. Asking the patient to state their full name and another
appropriate identifier
B. Asking another patient to confirm the identity
C. Checking only the room number
D. Labeling tubes before approaching the patient
Correct Answer: A. Asking the patient to state their full name
and another appropriate identifier
, Rationale: Positive patient identification requires comparison of
appropriate identifiers with the laboratory request or identification
band. Room numbers alone are not reliable identifiers.
7. Which additive is typically found in a lavender-top blood
collection tube?
A. Sodium citrate
B. Heparin
C. EDTA
D. Sodium fluoride
Correct Answer: C. EDTA
Rationale: Lavender-top tubes generally contain EDTA, an
anticoagulant that prevents clotting by binding calcium. They are
commonly used for hematology testing such as complete blood
counts.
8. Which tube is commonly used for coagulation studies?
A. Light blue-top tube
B. Lavender-top tube
C. Gray-top tube
D. Green-top tube
Correct Answer: A. Light blue-top tube
Rationale: Light blue-top tubes contain sodium citrate and are
commonly used for coagulation testing. The correct blood-to-
anticoagulant ratio is important for accurate coagulation results.
