NHA Phlebotomy Certification Exam 2022/2023/2026/2027 Study
Guide | Complete Test Bank with 100+ Real Exam Questions and 100%
Correct Answers | Latest Updated Version with Detailed Rationales and
Mnemonics | Covers All Domains: Patient Preparation, Order of Draw,
Specimen Handling, Complications, and Legal/Ethical Issues | A+
Graded Material for First-Time Pass Guarantee
SECTION 1: Phlebotomy Fundamentals (Questions 1-40)
1. What temperature should a semen sample be transported?
• A) 2-8°C
• B) 20-25°C
• C) 36-38°C
• D) 40-42°C
Answer: C) 36-38°C
Rationale: Semen samples must be transported at body temperature to maintain sperm
viability for analysis.
2. Which of the following would most likely result in a grossly hemolyzed
specimen?
• A) Incorrect order of draw
• B) Incorrect needle gauge
• C) Applying tourniquet too close to the draw site
• D) Failure to invert tube
Answer: B) Incorrect needle gauge
,Rationale: Using a needle that is too small causes red blood cell trauma as blood is
forced through a narrow lumen. Hemolysis releases hemoglobin and intracellular
contents, affecting many test results including potassium and LDH.
3. Which of the following is the proper procedure after collecting an ammonia
specimen?
• A) Protect from light
• B) Keep specimen warm
• C) Keep specimen at body temperature
• D) Place specimen in ice-water slurry
Answer: D) Place specimen in ice-water slurry
Rationale: Ammonia levels increase rapidly at room temperature due to continued
metabolism in red blood cells. Immediate chilling in an ice-water slurry stops this process
and preserves accurate results.
4. The phlebotomist has a request to collect a CBC from a healthy 10-month-old
infant. Which is the appropriate collection method?
• A) Heel puncture
• B) Fingerstick
• C) Venipuncture using a butterfly needle
• D) Arterial puncture
Answer: A) Heel puncture
Rationale: For infants under 1 year of age, capillary collection via heel puncture is the
standard of care to avoid damaging veins and arteries. The lateral or medial plantar
surface of the heel is used.
,5. What is the appropriate cleanser to clean the meatus for a clean-catch urine
specimen?
• A) Hydrogen peroxide
• B) Benzalkonium chloride
• C) Povidone-iodine
• D) Isopropyl alcohol
Answer: B) Benzalkonium chloride
Rationale: Benzalkonium chloride is the recommended antiseptic towelette for cleansing
the urethral meatus before collecting a clean-catch urine specimen.
6. When should the code on glucose cuvettes or strips be compared to the code on
the glucose meter?
• A) At the start of each shift
• B) When the patient is tested
• C) When a new box of strips is opened
• D) Weekly as part of quality control
Answer: B) When the patient is tested
Rationale: The code on the glucose test strip vial must be compared to the code on the
meter at the time of each patient test to ensure accurate results.
7. Which type of tube is appropriate to collect blood for a chemistry test that
requires serum?
• A) Light blue top
• B) Lavender top (EDTA)
• C) Serum Separator Tube (SST) with gel
• D) Gray top (sodium fluoride)
Answer: C) Serum Separator Tube (SST) with gel
, Rationale: SST tubes contain a clot activator and a gel barrier that separates serum from
cells after centrifugation. The gel barrier ensures the serum remains free of cellular
contamination.
8. A patient states she is a difficult draw and requests a skin puncture. The test
ordered is a PTT. How should the phlebotomist proceed?
• A) Perform a capillary puncture using a lavender top microcollection container
• B) Use a syringe and transfer to a light blue tube
• C) Perform a venipuncture using a butterfly needle and light blue tube
• D) Refuse the draw and request a physician order for arterial collection
Answer: B) Use a syringe and transfer to a light blue tube
Rationale: PTT testing requires plasma and must be collected in a light blue top tube
containing sodium citrate. If a difficult draw is anticipated, a syringe draw can be used, but
the blood must be gently transferred to the correct evacuated tube to maintain the pro per
blood-to-additive ratio.
9. Industry standard states needle insertion in the antecubital area should be at
what angle?
• A) 5-10 degrees
• B) 15-30 degrees
• C) 45-60 degrees
• D) 75-90 degrees
Answer: B) 15-30 degrees
Rationale: The recommended angle of needle insertion for venipuncture in the antecubital
area is 15 to 30 degrees. This allows for proper entry into the vein without going through
the opposite wall.
Guide | Complete Test Bank with 100+ Real Exam Questions and 100%
Correct Answers | Latest Updated Version with Detailed Rationales and
Mnemonics | Covers All Domains: Patient Preparation, Order of Draw,
Specimen Handling, Complications, and Legal/Ethical Issues | A+
Graded Material for First-Time Pass Guarantee
SECTION 1: Phlebotomy Fundamentals (Questions 1-40)
1. What temperature should a semen sample be transported?
• A) 2-8°C
• B) 20-25°C
• C) 36-38°C
• D) 40-42°C
Answer: C) 36-38°C
Rationale: Semen samples must be transported at body temperature to maintain sperm
viability for analysis.
2. Which of the following would most likely result in a grossly hemolyzed
specimen?
• A) Incorrect order of draw
• B) Incorrect needle gauge
• C) Applying tourniquet too close to the draw site
• D) Failure to invert tube
Answer: B) Incorrect needle gauge
,Rationale: Using a needle that is too small causes red blood cell trauma as blood is
forced through a narrow lumen. Hemolysis releases hemoglobin and intracellular
contents, affecting many test results including potassium and LDH.
3. Which of the following is the proper procedure after collecting an ammonia
specimen?
• A) Protect from light
• B) Keep specimen warm
• C) Keep specimen at body temperature
• D) Place specimen in ice-water slurry
Answer: D) Place specimen in ice-water slurry
Rationale: Ammonia levels increase rapidly at room temperature due to continued
metabolism in red blood cells. Immediate chilling in an ice-water slurry stops this process
and preserves accurate results.
4. The phlebotomist has a request to collect a CBC from a healthy 10-month-old
infant. Which is the appropriate collection method?
• A) Heel puncture
• B) Fingerstick
• C) Venipuncture using a butterfly needle
• D) Arterial puncture
Answer: A) Heel puncture
Rationale: For infants under 1 year of age, capillary collection via heel puncture is the
standard of care to avoid damaging veins and arteries. The lateral or medial plantar
surface of the heel is used.
,5. What is the appropriate cleanser to clean the meatus for a clean-catch urine
specimen?
• A) Hydrogen peroxide
• B) Benzalkonium chloride
• C) Povidone-iodine
• D) Isopropyl alcohol
Answer: B) Benzalkonium chloride
Rationale: Benzalkonium chloride is the recommended antiseptic towelette for cleansing
the urethral meatus before collecting a clean-catch urine specimen.
6. When should the code on glucose cuvettes or strips be compared to the code on
the glucose meter?
• A) At the start of each shift
• B) When the patient is tested
• C) When a new box of strips is opened
• D) Weekly as part of quality control
Answer: B) When the patient is tested
Rationale: The code on the glucose test strip vial must be compared to the code on the
meter at the time of each patient test to ensure accurate results.
7. Which type of tube is appropriate to collect blood for a chemistry test that
requires serum?
• A) Light blue top
• B) Lavender top (EDTA)
• C) Serum Separator Tube (SST) with gel
• D) Gray top (sodium fluoride)
Answer: C) Serum Separator Tube (SST) with gel
, Rationale: SST tubes contain a clot activator and a gel barrier that separates serum from
cells after centrifugation. The gel barrier ensures the serum remains free of cellular
contamination.
8. A patient states she is a difficult draw and requests a skin puncture. The test
ordered is a PTT. How should the phlebotomist proceed?
• A) Perform a capillary puncture using a lavender top microcollection container
• B) Use a syringe and transfer to a light blue tube
• C) Perform a venipuncture using a butterfly needle and light blue tube
• D) Refuse the draw and request a physician order for arterial collection
Answer: B) Use a syringe and transfer to a light blue tube
Rationale: PTT testing requires plasma and must be collected in a light blue top tube
containing sodium citrate. If a difficult draw is anticipated, a syringe draw can be used, but
the blood must be gently transferred to the correct evacuated tube to maintain the pro per
blood-to-additive ratio.
9. Industry standard states needle insertion in the antecubital area should be at
what angle?
• A) 5-10 degrees
• B) 15-30 degrees
• C) 45-60 degrees
• D) 75-90 degrees
Answer: B) 15-30 degrees
Rationale: The recommended angle of needle insertion for venipuncture in the antecubital
area is 15 to 30 degrees. This allows for proper entry into the vein without going through
the opposite wall.
