ASCP Phlebotomy Technician
Certification Exam (PBT) – Full-Length
Practice Questions And Correct Answers
(Verified Answers) Plus Rationales 2026
Q&A | Instant Download Pdf
1. The primary purpose of patient identification prior to phlebotomy is
to:
A. Ensure correct billing
B. Prevent specimen contamination
C. Ensure the specimen is collected from the correct patient
D. Improve patient satisfaction
Answer: C
Rationale: Proper patient identification prevents specimen mix-ups and
ensures accurate test results linked to the correct patient.
, 2. Which of the following identifiers is acceptable when identifying an
adult patient?
A. Room number
B. Date of admission
C. Full name and date of birth
D. Physician’s name
Answer: C
Rationale: Two unique identifiers such as full name and date of birth are
required for accurate patient identification.
3. The most appropriate vein for routine venipuncture is the:
A. Basilic vein
B. Cephalic vein
C. Median cubital vein
D. Dorsal hand vein
Answer: C
Rationale: The median cubital vein is well anchored, prominent, and least
likely to roll.
4. Which additive is found in a lavender-top tube?
A. Sodium citrate
B. Heparin
, C. EDTA
D. Sodium fluoride
Answer: C
Rationale: EDTA prevents clotting by chelating calcium and is used for
hematology tests.
5. The correct order of draw for evacuated tubes begins with:
A. Serum tubes
B. EDTA tubes
C. Heparin tubes
D. Blood culture bottles
Answer: D
Rationale: Blood cultures are drawn first to prevent contamination from
additives.
6. A tourniquet should not remain on a patient’s arm for longer than:
A. 30 seconds
B. 1 minute
C. 2 minutes
D. 3 minutes
, Answer: B
Rationale: Prolonged tourniquet application can cause hemoconcentration
and inaccurate results.
7. Which condition increases the risk of excessive bleeding after
venipuncture?
A. Diabetes mellitus
B. Hypertension
C. Hemophilia
D. Dehydration
Answer: C
Rationale: Hemophilia is a clotting disorder that increases bleeding risk.
8. The recommended antiseptic for routine venipuncture is:
A. Povidone-iodine
B. Benzalkonium chloride
C. 70% isopropyl alcohol
D. Hydrogen peroxide
Answer: C
Rationale: 70% isopropyl alcohol effectively cleans the site and reduces
microbial contamination.
Certification Exam (PBT) – Full-Length
Practice Questions And Correct Answers
(Verified Answers) Plus Rationales 2026
Q&A | Instant Download Pdf
1. The primary purpose of patient identification prior to phlebotomy is
to:
A. Ensure correct billing
B. Prevent specimen contamination
C. Ensure the specimen is collected from the correct patient
D. Improve patient satisfaction
Answer: C
Rationale: Proper patient identification prevents specimen mix-ups and
ensures accurate test results linked to the correct patient.
, 2. Which of the following identifiers is acceptable when identifying an
adult patient?
A. Room number
B. Date of admission
C. Full name and date of birth
D. Physician’s name
Answer: C
Rationale: Two unique identifiers such as full name and date of birth are
required for accurate patient identification.
3. The most appropriate vein for routine venipuncture is the:
A. Basilic vein
B. Cephalic vein
C. Median cubital vein
D. Dorsal hand vein
Answer: C
Rationale: The median cubital vein is well anchored, prominent, and least
likely to roll.
4. Which additive is found in a lavender-top tube?
A. Sodium citrate
B. Heparin
, C. EDTA
D. Sodium fluoride
Answer: C
Rationale: EDTA prevents clotting by chelating calcium and is used for
hematology tests.
5. The correct order of draw for evacuated tubes begins with:
A. Serum tubes
B. EDTA tubes
C. Heparin tubes
D. Blood culture bottles
Answer: D
Rationale: Blood cultures are drawn first to prevent contamination from
additives.
6. A tourniquet should not remain on a patient’s arm for longer than:
A. 30 seconds
B. 1 minute
C. 2 minutes
D. 3 minutes
, Answer: B
Rationale: Prolonged tourniquet application can cause hemoconcentration
and inaccurate results.
7. Which condition increases the risk of excessive bleeding after
venipuncture?
A. Diabetes mellitus
B. Hypertension
C. Hemophilia
D. Dehydration
Answer: C
Rationale: Hemophilia is a clotting disorder that increases bleeding risk.
8. The recommended antiseptic for routine venipuncture is:
A. Povidone-iodine
B. Benzalkonium chloride
C. 70% isopropyl alcohol
D. Hydrogen peroxide
Answer: C
Rationale: 70% isopropyl alcohol effectively cleans the site and reduces
microbial contamination.
