NHA Phlebotomy National Exam Questions & Answers
2026 | Latest Study Guide
1. What is the role of the aortic valve in the heart?
Control blood flow to the lungs
Direct blood flow to the coronary arteries
Prevent backflow of blood into the left ventricle
Regulate blood flow into the right ventricle
2. If a patient has a blood pH of 7.25, what potential health issues might arise
due to this condition?
Normal physiological functions
Acidosis and impaired cellular functions
Enhanced enzyme activity
Alkalosis and increased oxygen transport
3. Which of the following situations may cause petechiae?
Reflux of collection tube additive
Inadvertent arterial puncture
Tourniquet tied too tightly
Venipuncture at site of a hematoma
4. Describe why the antecubital fossa is considered the preferred site for
venipuncture.
The antecubital fossa contains large veins that are close to the
surface, making them easier to access.
, The antecubital fossa has fewer nerve endings, reducing pain during
the procedure.
The antecubital fossa is the only site where blood can be drawn safely.
The antecubital fossa is less prone to infection compared to other
sites.
5. Describe the importance of following safety protocols during blood
collection.
Safety protocols only apply to the equipment used.
Following safety protocols minimizes contamination and protects
both the patient and the healthcare worker.
Safety protocols are only necessary for high-risk patients.
Safety protocols are optional if the phlebotomist is experienced.
6. Describe the significance of the lifespan of red blood cells in relation to
overall health.
The lifespan of red blood cells is significant because it affects
oxygen transport and the body's ability to maintain healthy blood
levels.
The lifespan of red blood cells is not significant as they are constantly
replaced.
The lifespan of red blood cells indicates the amount of iron in the
body.
The lifespan of red blood cells is irrelevant to health.
7. Describe why the heel is the preferred site for dermal punctures in infants.
The heel is preferred because it allows for larger blood samples.
, The heel is preferred because it is less painful for the infant.
The heel is preferred because it has a rich supply of capillaries and
minimizes the risk of injury to bones and nerves.
The heel is preferred because it is easier to access than other sites.
8. In a clinical setting, if a phlebotomist encounters a patient with a known
infectious disease, what precautions should they take to mitigate biologic
hazards?
Ignore the patient's condition and proceed with the procedure.
Only wash hands after the procedure is completed.
Implement standard infection control protocols, including wearing
personal protective equipment (PPE).
Use the same gloves for multiple patients.
9. What is the primary responsibility of Phlebotomy?
Providing therapy to restore mobility
Monitoring patients with cardiovascular diseases
Collecting samples from patients and processing them for testing
10. If a phlebotomist causes trauma during a venipuncture, what steps should
they take to address the situation?
The phlebotomist should apply pressure to the site and monitor for
any signs of complications.
The phlebotomist should document the trauma but take no further
action.
The phlebotomist should ignore the trauma if the blood sample is
adequate.
, The phlebotomist should immediately perform another venipuncture.
11. What is the average life span of a red blood cell?
150 days
90 days
30 days
120 days
12. Describe the role of the mitral valve in the heart's function.
The mitral valve separates the left atrium from the pulmonary artery.
The mitral valve prevents backflow of blood into the right atrium.
The mitral valve regulates blood flow from the left atrium to the left
ventricle.
The mitral valve allows blood to flow from the left ventricle to the
aorta.
13. Where is the aortic valve located in the heart?
Between the left atrium and the left ventricle
Between the right ventricle and the pulmonary artery
Between the left ventricle and the aorta
Between the right atrium and the right ventricle
14. Describe the significance of HIPAA in the context of patient care and
information security.
HIPAA is significant because it outlines the procedures for blood
collection.
2026 | Latest Study Guide
1. What is the role of the aortic valve in the heart?
Control blood flow to the lungs
Direct blood flow to the coronary arteries
Prevent backflow of blood into the left ventricle
Regulate blood flow into the right ventricle
2. If a patient has a blood pH of 7.25, what potential health issues might arise
due to this condition?
Normal physiological functions
Acidosis and impaired cellular functions
Enhanced enzyme activity
Alkalosis and increased oxygen transport
3. Which of the following situations may cause petechiae?
Reflux of collection tube additive
Inadvertent arterial puncture
Tourniquet tied too tightly
Venipuncture at site of a hematoma
4. Describe why the antecubital fossa is considered the preferred site for
venipuncture.
The antecubital fossa contains large veins that are close to the
surface, making them easier to access.
, The antecubital fossa has fewer nerve endings, reducing pain during
the procedure.
The antecubital fossa is the only site where blood can be drawn safely.
The antecubital fossa is less prone to infection compared to other
sites.
5. Describe the importance of following safety protocols during blood
collection.
Safety protocols only apply to the equipment used.
Following safety protocols minimizes contamination and protects
both the patient and the healthcare worker.
Safety protocols are only necessary for high-risk patients.
Safety protocols are optional if the phlebotomist is experienced.
6. Describe the significance of the lifespan of red blood cells in relation to
overall health.
The lifespan of red blood cells is significant because it affects
oxygen transport and the body's ability to maintain healthy blood
levels.
The lifespan of red blood cells is not significant as they are constantly
replaced.
The lifespan of red blood cells indicates the amount of iron in the
body.
The lifespan of red blood cells is irrelevant to health.
7. Describe why the heel is the preferred site for dermal punctures in infants.
The heel is preferred because it allows for larger blood samples.
, The heel is preferred because it is less painful for the infant.
The heel is preferred because it has a rich supply of capillaries and
minimizes the risk of injury to bones and nerves.
The heel is preferred because it is easier to access than other sites.
8. In a clinical setting, if a phlebotomist encounters a patient with a known
infectious disease, what precautions should they take to mitigate biologic
hazards?
Ignore the patient's condition and proceed with the procedure.
Only wash hands after the procedure is completed.
Implement standard infection control protocols, including wearing
personal protective equipment (PPE).
Use the same gloves for multiple patients.
9. What is the primary responsibility of Phlebotomy?
Providing therapy to restore mobility
Monitoring patients with cardiovascular diseases
Collecting samples from patients and processing them for testing
10. If a phlebotomist causes trauma during a venipuncture, what steps should
they take to address the situation?
The phlebotomist should apply pressure to the site and monitor for
any signs of complications.
The phlebotomist should document the trauma but take no further
action.
The phlebotomist should ignore the trauma if the blood sample is
adequate.
, The phlebotomist should immediately perform another venipuncture.
11. What is the average life span of a red blood cell?
150 days
90 days
30 days
120 days
12. Describe the role of the mitral valve in the heart's function.
The mitral valve separates the left atrium from the pulmonary artery.
The mitral valve prevents backflow of blood into the right atrium.
The mitral valve regulates blood flow from the left atrium to the left
ventricle.
The mitral valve allows blood to flow from the left ventricle to the
aorta.
13. Where is the aortic valve located in the heart?
Between the left atrium and the left ventricle
Between the right ventricle and the pulmonary artery
Between the left ventricle and the aorta
Between the right atrium and the right ventricle
14. Describe the significance of HIPAA in the context of patient care and
information security.
HIPAA is significant because it outlines the procedures for blood
collection.
