Official NCCT Phlebotomy Certification Exam Review

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This is a review that can be purchased from the official NCCT website, and I decided to try and help out some fellow students by posting it on here. I hope it is helpful.


Questions and Answers
  • 1. 

    The forearm vein most commonly used for venipuncture is the _________.

    • A.

      Median Cubital

    • B.

      Basilic

    • C.

      Cephalic

    • D.

      Radial

    Correct Answer
    A. Median Cubital
    Explanation
    The forearm vein most commonly used for venipuncture is the median cubital vein. This vein is preferred because it is large and easily accessible, making it ideal for drawing blood or inserting intravenous catheters. The basilic and cephalic veins are also located in the forearm but are not as commonly used due to their smaller size or deeper location. The radial vein is located in the wrist and is not typically used for venipuncture.

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  • 2. 

    The smallest veins in the human body are known as ___________.

    • A.

      Villi

    • B.

      Bronchioles

    • C.

      Venules

    • D.

      Lymph glands

    Correct Answer
    C. Venules
    Explanation
    Venules are the smallest veins in the human body. Veins are blood vessels that carry deoxygenated blood back to the heart. Venules are the smallest branches of veins, connecting the capillaries to larger veins. They play a crucial role in the circulation of blood, allowing for the exchange of oxygen, nutrients, and waste products between the tissues and the bloodstream.

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  • 3. 

    The aorta branches into smaller divisions called arteries, which in turn branch into even smaller divisions called ___________.

    • A.

      Capillaries

    • B.

      Arterioles

    • C.

      Venules

    • D.

      Lymph glands

    Correct Answer
    B. Arterioles
    Explanation
    The aorta is the largest artery in the body and carries oxygenated blood away from the heart to the rest of the body. As it branches out, it forms smaller divisions known as arteries. These arteries further divide into even smaller divisions called arterioles. Arterioles are responsible for regulating blood flow and controlling blood pressure. They connect arteries to capillaries, which are the smallest blood vessels in the body. Therefore, arterioles are the correct answer as they are the immediate smaller divisions of arteries.

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  • 4. 

    Characteristics of capillaries include ____________.

    • A.

      Having thin walls

    • B.

      Forming microscopic pathways

    • C.

      Connecting arterioles with venules

    • D.

      All of the above

    Correct Answer
    D. All of the above
    Explanation
    Capillaries have thin walls, which allows for the exchange of nutrients and waste products between the blood and surrounding tissues. They also form microscopic pathways, providing a network of small blood vessels throughout the body. Additionally, capillaries connect arterioles (small arteries) with venules (small veins), enabling the transportation of blood from the arteries to the veins. Therefore, all of the given characteristics are true for capillaries.

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  • 5. 

    Within the capillaries, blood cell functions include _________.

    • A.

      Releasing oxygen

    • B.

      Binding carbon dioxide

    • C.

      Eliminating waste

    • D.

      All of the above

    Correct Answer
    D. All of the above
    Explanation
    Within the capillaries, blood cell functions include releasing oxygen, binding carbon dioxide, and eliminating waste. Capillaries are the smallest blood vessels in the body and play a crucial role in the exchange of gases, nutrients, and waste products between the blood and surrounding tissues. Red blood cells carry oxygen from the lungs to the tissues, and within the capillaries, they release oxygen to the cells and bind carbon dioxide for transport back to the lungs. Additionally, white blood cells help in eliminating waste and fighting off infections within the capillaries. Therefore, all of the given options are correct.

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  • 6. 

    The heart, lymphatic organs, and blood vessels are in the __________ system.

    • A.

      Respiratory

    • B.

      Cardiovascular

    • C.

      Digestive

    • D.

      Urinary

    Correct Answer
    B. Cardiovascular
    Explanation
    The heart, lymphatic organs, and blood vessels are all part of the cardiovascular system. This system is responsible for the circulation of blood throughout the body, delivering oxygen and nutrients to the organs and tissues, and removing waste products. The respiratory system is responsible for the exchange of gases, the digestive system is responsible for the breakdown and absorption of nutrients, and the urinary system is responsible for the elimination of waste products. Therefore, the correct answer is cardiovascular.

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  • 7. 

    The suffix --URIA at the end of a medical  term refers to what body location?

    • A.

      Blood stream

    • B.

      Urine

    • C.

      Kidney

    • D.

      Synovial fluid

    Correct Answer
    B. Urine
    Explanation
    The suffix -URIA at the end of a medical term refers to urine. This suffix is commonly used to indicate a condition or presence of a substance in the urine. For example, hematuria refers to the presence of blood in the urine, and proteinuria refers to the presence of protein in the urine. Therefore, when encountering a medical term with -URIA, it is related to the urinary system or the presence of substances in the urine.

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  • 8. 

    The study of blood is known as _________.

    • A.

      Hematology

    • B.

      Hematoxylin

    • C.

      Hemoglobin

    • D.

      Hemolysis

    Correct Answer
    A. Hematology
    Explanation
    Hematology is the study of blood, including its formation, diseases, and abnormalities. It involves analyzing blood samples to diagnose and monitor various conditions such as anemia, leukemia, and blood clotting disorders. Hematology also includes the study of blood cells, their structure, function, and interactions with other components of the blood. By studying blood, hematologists can gain valuable insights into a person's overall health and identify any potential health issues or diseases.

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  • 9. 

    The liver, stomach, mouth, and pancreas are in the __________ system.

    • A.

      Reproductive

    • B.

      Sensory

    • C.

      Digestive

    • D.

      Muscular

    Correct Answer
    C. Digestive
    Explanation
    The liver, stomach, mouth, and pancreas are all organs involved in the process of digestion. They play a crucial role in breaking down food, absorbing nutrients, and eliminating waste. Therefore, these organs are part of the digestive system.

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  • 10. 

    The most important step to ensure accuracy in sample collection is ______________.

    • A.

      Recording the time accurately

    • B.

      By always wearing gloves

    • C.

      Keeping the patient supine

    • D.

      Identifying the patient properly

    Correct Answer
    D. Identifying the patient properly
    Explanation
    Identifying the patient properly is the most important step to ensure accuracy in sample collection. This is because it helps to avoid any mix-ups or errors in collecting samples from the wrong patient. It ensures that the sample is collected from the intended individual, reducing the risk of misdiagnosis or incorrect treatment. Proper identification also helps in maintaining patient safety and confidentiality.

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  • 11. 

    The bladder, urethra, kidneys, and ureters are in the ________ system.

    • A.

      Urinary

    • B.

      Reproductive

    • C.

      Respiratory

    • D.

      Muscular

    Correct Answer
    A. Urinary
    Explanation
    The bladder, urethra, kidneys, and ureters are all organs involved in the process of excreting waste products from the body in the form of urine. This system is known as the urinary system. The reproductive system is responsible for reproduction, the respiratory system is responsible for breathing, and the muscular system is responsible for movement. Therefore, the correct answer is urinary.

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  • 12. 

    The trachea, nose, lungs, and pharynx are in the __________ system.

    • A.

      Skeletal

    • B.

      Respiratory

    • C.

      Nervous

    • D.

      Sensory

    Correct Answer
    B. Respiratory
    Explanation
    The trachea, nose, lungs, and pharynx are all parts of the respiratory system. The respiratory system is responsible for the exchange of oxygen and carbon dioxide in the body. The trachea and lungs help in the process of breathing by allowing air to enter and exit the body. The nose and pharynx are involved in filtering, warming, and moistening the air before it reaches the lungs. Therefore, the correct answer is respiratory.

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  • 13. 

    The sebaceous glands, skin, hair, and nails are in the ________ system.

    • A.

      Nervous

    • B.

      Cardiovascular

    • C.

      Sensory

    • D.

      Integumentary

    Correct Answer
    D. Integumentary
    Explanation
    The sebaceous glands, skin, hair, and nails are all part of the integumentary system. The integumentary system is responsible for protecting the body from external threats, regulating body temperature, and providing sensory information. Sebaceous glands produce sebum, which helps to lubricate the skin and hair. The skin acts as a barrier against pathogens and UV radiation. Hair and nails are derived from the skin and provide additional protection and sensory functions. Therefore, the correct answer is integumentary.

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  • 14. 

    The body system that is a primary regulator of hormones is the __________ system.

    • A.

      Reproductive

    • B.

      Endocrine

    • C.

      Integumentary

    • D.

      Cardiovascular

    Correct Answer
    B. Endocrine
    Explanation
    The endocrine system is responsible for producing and regulating hormones in the body. Hormones are chemical messengers that control various bodily functions, including growth, metabolism, and reproduction. This system consists of glands such as the pituitary gland, thyroid gland, and adrenal glands, which release hormones directly into the bloodstream. Therefore, the endocrine system is the primary regulator of hormones in the body.

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  • 15. 

    Neutrophils, eosinophils, basophils, lymphocytes, and monocytes are types of ___________.

    • A.

      Red blood cells

    • B.

      Coagulation factors

    • C.

      Anticoagulants

    • D.

      White blood cells

    Correct Answer
    D. White blood cells
    Explanation
    Neutrophils, eosinophils, basophils, lymphocytes, and monocytes are all types of white blood cells. White blood cells, also known as leukocytes, are an essential part of the immune system and play a crucial role in defending the body against infections and diseases. Each type of white blood cell has its own specific function and helps to protect the body in different ways.

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  • 16. 

    The common name for the thrombocyte is the ____________.

    • A.

      Red blood cell

    • B.

      White blood cell

    • C.

      Bone marrow

    • D.

      Platelet

    Correct Answer
    D. Platelet
    Explanation
    Platelets are small, colorless cell fragments that are formed in the bone marrow. They play a crucial role in blood clotting and preventing excessive bleeding. Thrombocytes and platelets are synonymous terms used to describe these cell fragments. Therefore, the correct answer is platelet.

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  • 17. 

    The liquid portion of an anticoagulated blood sample is known as ___________.

    • A.

      Serum

    • B.

      Clot

    • C.

      Plasma

    • D.

      Hematocrit

    Correct Answer
    C. Plasma
    Explanation
    Plasma is the correct answer because it refers to the liquid portion of a blood sample that has been treated with an anticoagulant. It is the yellowish fluid that remains after the blood has been centrifuged to separate the cells and clotting factors. Plasma contains various proteins, electrolytes, hormones, and waste products, and it plays a crucial role in transporting nutrients, hormones, and waste throughout the body.

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  • 18. 

    The instrument that measures blood pressure is called a ______________.

    • A.

      Sphygmomonometer

    • B.

      Hydration barometer

    • C.

      Temperature probe

    • D.

      Co-oximeter

    Correct Answer
    A. Sphygmomonometer
    Explanation
    A sphygmomanometer is the correct instrument used to measure blood pressure. It consists of an inflatable cuff that is wrapped around the upper arm and a pressure gauge to measure the pressure in the cuff. By inflating the cuff and slowly releasing the pressure, the healthcare professional can determine the systolic and diastolic blood pressure readings. The term "sphygmomonometer" is a combination of "sphygmo" (related to the pulse) and "manometer" (a device used to measure pressure), which accurately describes the purpose and function of this instrument.

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  • 19. 

    An artery can be distinguished from a vein because an artery will be __________.

    • A.

      Harder

    • B.

      Pulsating

    • C.

      A different color

    • D.

      Softer

    Correct Answer
    B. Pulsating
    Explanation
    Arteries can be distinguished from veins because arteries carry oxygenated blood away from the heart to the rest of the body, while veins carry deoxygenated blood back to the heart. Arteries have thicker walls and are more muscular compared to veins. They also have a pulsating sensation caused by the rhythmic pumping of blood by the heart. Therefore, the correct answer is "pulsating".

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  • 20. 

    Lancets are used to collect blood samples by ______________.

    • A.

      Venipuncture

    • B.

      Arterial puncture

    • C.

      Venous accession devices

    • D.

      Capillary or skin puncture

    Correct Answer
    D. Capillary or skin puncture
    Explanation
    Lancets are used to collect blood samples by capillary or skin puncture. This means that lancets are primarily used to obtain blood samples by pricking the skin, usually on the finger or heel, to access the capillaries beneath the skin surface. This method is commonly used for glucose monitoring, as well as for small blood tests that do not require a large volume of blood. It is a less invasive method compared to venipuncture, which involves drawing blood from a vein using a needle and syringe. Arterial puncture is another method used to collect blood samples, but it is not typically done using lancets. Venous accession devices refer to tools used to access veins for blood collection, but they are not specifically related to lancets.

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  • 21. 

    The abbreviation VAD is commonly used in hospitals to refer to __________.

    • A.

      Venous anesthetic devices

    • B.

      Venous access devices

    • C.

      Various anesthetic devices

    • D.

      Variable antiseptic dilutions

    Correct Answer
    B. Venous access devices
    Explanation
    The abbreviation VAD is commonly used in hospitals to refer to venous access devices. These devices are used to gain access to a patient's veins for the purpose of administering medication, fluids, or blood products. Venous access devices can include peripheral intravenous catheters, central venous catheters, and peripherally inserted central catheters.

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  • 22. 

    To determine the size of the needle, remember that the higher the gauge, the ___________.

    • A.

      Longer the needle length

    • B.

      Smaller the needle bore

    • C.

      Smaller the needle length

    • D.

      Larger the needle bore

    Correct Answer
    B. Smaller the needle bore
    Explanation
    The higher the gauge, the smaller the needle bore. This means that as the gauge number increases, the diameter of the needle bore decreases. Therefore, a higher gauge needle will have a smaller opening compared to a lower gauge needle.

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  • 23. 

    Adult capillary punctures most often involve the use of the ______________ finger(s).

    • A.

      Second (index)

    • B.

      Little (fifth)

    • C.

      Third and fourth (middle and ring)

    • D.

      Second and third (index and middle)

    Correct Answer
    C. Third and fourth (middle and ring)
    Explanation
    Adult capillary punctures most often involve the use of the third and fourth fingers, also known as the middle and ring fingers. These fingers are commonly used because they have a good blood supply and are less sensitive compared to the index and little fingers. Using these fingers for capillary punctures minimizes discomfort for the patient and allows for an easier and more successful blood collection.

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  • 24. 

    A centrifuge is used in a clinical laboratory setting to __________________.

    • A.

      Sort tubes of different colors

    • B.

      Store tubes at correct temperatures

    • C.

      Measure blood oxygen levels

    • D.

      Separate liquid from cells in blood

    Correct Answer
    D. Separate liquid from cells in blood
    Explanation
    A centrifuge is a device that spins samples at high speeds to separate components based on their density. In a clinical laboratory setting, a centrifuge is commonly used to separate the liquid portion of blood (plasma or serum) from the cellular components (red and white blood cells). This separation is important for various diagnostic tests and allows for further analysis of each component. Therefore, the correct answer is to separate liquid from cells in blood.

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  • 25. 

    The oral glucose tolerance test is used for the detection of _________________.

    • A.

      Hepatitis

    • B.

      Diabetes

    • C.

      Mononucleosis

    • D.

      AIDS

    Correct Answer
    B. Diabetes
    Explanation
    The oral glucose tolerance test is used for the detection of diabetes. This test measures how the body metabolizes glucose over a period of time. It involves drinking a glucose solution and then blood samples are taken at regular intervals to measure the blood sugar levels. If the body is unable to properly regulate blood sugar levels, it can indicate the presence of diabetes.

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  • 26. 

    Use a _______-topped evacuated tube for collection of blood for a CBC test.

    • A.

      Black

    • B.

      Lavender

    • C.

      Red

    • D.

      Blue

    Correct Answer
    B. Lavender
    Explanation
    The correct answer is lavender because lavender is the color commonly used for blood collection tubes for a complete blood count (CBC) test. Different color-coded tubes are used for different types of blood tests, and lavender is specifically used for CBC tests. The color coding helps to ensure that the correct tube is used for the specific test, preventing any cross-contamination or inaccurate results.

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  • 27. 

    Use a __________ -topped evacuated tube for collection of blood for electrolyte testing

    • A.

      Yellow

    • B.

      Red

    • C.

      Blue

    • D.

      Lavender

    Correct Answer
    B. Red
    Explanation
    A red-topped evacuated tube is used for the collection of blood for electrolyte testing. The color of the tube indicates the type of additive present in it, which helps preserve the integrity of the blood sample and prevent clotting. In this case, the red color indicates the presence of a clot activator, which promotes blood clotting and separates the serum from the blood cells. This is important for electrolyte testing as it allows for accurate measurement of the electrolyte levels in the liquid part of the blood.

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  • 28. 

    Use a ________-topped evacuated tube for collection of blood for cholesterol testing.

    • A.

      Red

    • B.

      Yellow

    • C.

      Blue

    • D.

      Lavender

    Correct Answer
    A. Red
    Explanation
    A red-topped evacuated tube is used for the collection of blood for cholesterol testing. This is because different color-coded tubes are used for different types of blood tests, and the red top specifically indicates that it contains a clot activator and a gel separator. This allows for the separation of serum from the blood cells, which is necessary for accurate cholesterol testing.

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  • 29. 

    Sodium citrate is an anticoagulant of choice for coagulation studies because it protects __________.

    • A.

      Clotting factors

    • B.

      Red blood cells

    • C.

      White blood cells

    • D.

      Enzyme inhibitors

    Correct Answer
    A. Clotting factors
    Explanation
    Sodium citrate is used as an anticoagulant for coagulation studies because it protects clotting factors. Clotting factors are proteins in the blood that are responsible for the formation of blood clots. By adding sodium citrate, it prevents the blood from clotting by binding to calcium ions, which are necessary for the clotting process. This allows the coagulation studies to be conducted without interference from clotting factors, ensuring accurate results.

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  • 30. 

    When preparing a blood smear directly from a skin puncture, it is best to ___________.

    • A.

      Use plastic slides instead of glass

    • B.

      Make it as think as possible

    • C.

      Wipe away the first drop of blood

    • D.

      Add sodium citrate to the blood

    Correct Answer
    C. Wipe away the first drop of blood
    Explanation
    When preparing a blood smear directly from a skin puncture, it is best to wipe away the first drop of blood. This is because the first drop of blood may contain tissue fluid or contaminants from the puncture site, which can interfere with the accuracy of the smear. By wiping away the first drop, a cleaner and more representative sample of blood can be obtained for the smear.

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  • 31. 

    The purpose of doing blood cultures is to detect____________.

    • A.

      Anemia

    • B.

      Cholesterol

    • C.

      Cancer

    • D.

      Septicemia

    Correct Answer
    D. Septicemia
    Explanation
    Blood cultures are performed to detect septicemia, which is a serious bloodstream infection caused by bacteria or fungi. By taking a sample of blood and incubating it in a culture medium, any microorganisms present in the bloodstream can multiply and be identified. Detecting septicemia is crucial as it allows for prompt treatment with appropriate antibiotics, reducing the risk of complications and potentially saving lives. Anemia, cholesterol, and cancer are unrelated to blood cultures and have different diagnostic methods.

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  • 32. 

    Anticoagulants are used to ___________.

    • A.

      Fight infection

    • B.

      Prevent blood from clotting

    • C.

      Neutralize stomach acid

    • D.

      Inhibit bacterial growth

    Correct Answer
    B. Prevent blood from clotting
    Explanation
    Anticoagulants are medications that are used to prevent blood from clotting. These medications work by inhibiting the clotting factors in the blood, thus reducing the risk of blood clots forming. This is important in certain medical conditions such as deep vein thrombosis, atrial fibrillation, and after certain surgeries or procedures. By preventing blood from clotting, anticoagulants help to maintain blood flow and prevent blockages in blood vessels, reducing the risk of serious complications such as stroke or pulmonary embolism.

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  • 33. 

    White blood cells help the body by ________.

    • A.

      Carrying oxygen to the tissue

    • B.

      Collecting waste products

    • C.

      Defending against foreign invaders

    • D.

      Assisting in hemostasis

    Correct Answer
    C. Defending against foreign invaders
    Explanation
    White blood cells, also known as leukocytes, play a crucial role in the body's immune system. They are responsible for defending the body against foreign invaders such as bacteria, viruses, and other pathogens. White blood cells identify and destroy these invaders, helping to prevent infections and maintain overall health. They do this through various mechanisms such as engulfing and digesting pathogens, producing antibodies, and coordinating immune responses. Therefore, the correct answer is defending against foreign invaders.

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  • 34. 

    Platelets help the circulation by __________.

    • A.

      Carrying oxygen

    • B.

      Collecting waste products

    • C.

      Defending against foreign invaders

    • D.

      Participating in hemostasis

    Correct Answer
    D. Participating in hemostasis
    Explanation
    Platelets are small, colorless cell fragments that play a crucial role in the process of hemostasis, which is the body's way of stopping bleeding. When a blood vessel is damaged, platelets rush to the site and form a plug to seal the wound, preventing further blood loss. They also release chemicals that help in the formation of blood clots, which further aid in stopping bleeding. Therefore, platelets participate in hemostasis, ensuring the maintenance of normal blood circulation.

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  • 35. 

    When blood seeps into the surrounding tissue during a venipuncture, a ______ may form. 

    • A.

      Petechia

    • B.

      Carbuncle

    • C.

      Hematoma

    • D.

      Hemolysis

    Correct Answer
    C. Hematoma
    Explanation
    During a venipuncture, blood may seep into the surrounding tissue, causing a hematoma to form. A hematoma is a localized collection of blood outside the blood vessels, typically caused by damage to the blood vessels during the procedure. This can result in swelling, pain, and discoloration in the affected area.

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  • 36. 

    In a patient with a clotting disorder, pressure should be applied to the puncture site for at least ________ after venipuncture to insure blood stoppage.

    • A.

      3 minutes

    • B.

      5 minutes

    • C.

      7 minutes

    • D.

      10 minutes

    Correct Answer
    B. 5 minutes
    Explanation
    In a patient with a clotting disorder, it is important to apply pressure to the puncture site for at least 5 minutes after venipuncture to ensure that bleeding stops. This extended duration of pressure helps to prevent excessive bleeding and allows enough time for the clotting factors to work effectively in patients with clotting disorders. Applying pressure for a shorter duration may result in continued bleeding, which can be problematic for these patients.

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  • 37. 

    Skin punctures may be indicated for use when ____________.

    • A.

      The patient is an infant, toddler, or preschooler

    • B.

      Only a small amount of blood is needed

    • C.

      Patient veins need to be preserved for IV therapy

    • D.

      All of the above

    Correct Answer
    D. All of the above
    Explanation
    Skin punctures may be indicated for use when the patient is an infant, toddler, or preschooler because their veins are often too small and fragile for venipuncture. Additionally, skin punctures are suitable when only a small amount of blood is needed, as it allows for a more controlled and precise collection. Furthermore, skin punctures are preferred when patient veins need to be preserved for IV therapy, as it minimizes the risk of damage to the veins. Therefore, all of the above reasons justify the use of skin punctures.

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  • 38. 

    All specimens should be labeled with _________.

    • A.

      Patient's name (and numeric ID)

    • B.

      Date and time the specimen was drawn

    • C.

      Collector's initials

    • D.

      All of the above

    Correct Answer
    D. All of the above
    Explanation
    All specimens should be labeled with the patient's name (and numeric ID), date and time the specimen was drawn, and the collector's initials. This is important for proper identification and tracking of the specimen. The patient's name and numeric ID ensure that the specimen is linked to the correct individual. The date and time of collection provide crucial information about the timeliness of the specimen. The collector's initials help identify the person responsible for collecting the specimen. Therefore, all of the above options are necessary for accurate labeling of specimens.

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  • 39. 

    When performing a skin puncture, squeezing the finger too tightly may dilute the blood with ____________ and ruin the test.

    • A.

      Swab particles

    • B.

      Alcohol

    • C.

      Skin particles

    • D.

      Tissue fluid

    Correct Answer
    D. Tissue fluid
    Explanation
    When performing a skin puncture, squeezing the finger too tightly may dilute the blood with tissue fluid and ruin the test. This is because squeezing the finger too tightly can cause the release of tissue fluid, which is the clear fluid found in tissues. If this tissue fluid mixes with the blood sample, it can alter the composition and concentration of the blood, potentially leading to inaccurate test results. Therefore, it is important to avoid squeezing the finger too tightly during a skin puncture to ensure the integrity of the blood sample.

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  • 40. 

    One test often used to assess hemostasis before surgery is _________. 

    • A.

      Blood culture

    • B.

      Hemoglobin

    • C.

      Platelet count

    • D.

      Bleeding time

    Correct Answer
    D. Bleeding time
    Explanation
    Bleeding time is often used to assess hemostasis before surgery. This test measures the time it takes for bleeding to stop after a standardized skin incision is made. It evaluates the primary hemostasis process, specifically platelet function and blood vessel constriction. A prolonged bleeding time may indicate a potential bleeding disorder or platelet dysfunction, which could increase the risk of excessive bleeding during surgery. Therefore, this test helps surgeons make informed decisions about the patient's suitability for surgery and the need for any additional interventions to ensure proper hemostasis.

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  • 41. 

    One possible cause of unexpected clotting is an anticoagulated blood tube might be ____________.

    • A.

      Insufficient mixing

    • B.

      Unbalanced centrifuge

    • C.

      Traumatized specimen

    • D.

      Incomplete filling of the tube

    Correct Answer
    A. Insufficient mixing
    Explanation
    Insufficient mixing of an anticoagulated blood tube can lead to unexpected clotting. When the anticoagulant is not properly mixed with the blood, it may not effectively prevent clotting, resulting in the formation of clots. Proper mixing ensures that the anticoagulant is evenly distributed throughout the sample, preventing clot formation and ensuring accurate test results.

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  • 42. 

    When performing a venipuncture, position the bevel of the needle ____________.

    • A.

      Facing up

    • B.

      Facing down

    • C.

      Turned sideways

    • D.

      None of the above

    Correct Answer
    A. Facing up
    Explanation
    When performing a venipuncture, it is important to position the bevel of the needle facing up. This allows for easier insertion into the vein and reduces the risk of complications such as hematoma or damage to the vein. By positioning the bevel facing up, the needle can smoothly enter the vein and minimize discomfort for the patient.

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  • 43. 

    If blood does not appear in an evacuated tube upon venipuncture, a phlebotomist's first course of action should be to __________. 

    • A.

      Pop the tourniquet and tie it tighter

    • B.

      Pull the needle out and start over

    • C.

      Slightly reposition or turn the needle

    • D.

      Push the needle further up the lumen

    Correct Answer
    C. Slightly reposition or turn the needle
    Explanation
    If blood does not appear in an evacuated tube upon venipuncture, the phlebotomist's first course of action should be to slightly reposition or turn the needle. This is because the needle may not be properly positioned in the vein, causing the blood flow to be obstructed. By repositioning or turning the needle, the phlebotomist can ensure that the needle is correctly placed in the vein, allowing for blood to be drawn successfully.

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  • 44. 

    Redirecting a needle during venipuncture is sometimes necessary when _____________.

    • A.

      The vein was not properly anchored

    • B.

      The patient moves unexpectedly

    • C.

      Blood flow starts, and then stops

    • D.

      All of the above

    Correct Answer
    D. All of the above
    Explanation
    Redirecting a needle during venipuncture is sometimes necessary when the vein was not properly anchored, the patient moves unexpectedly, or blood flow starts and then stops. In these situations, redirecting the needle allows for better accuracy and success in accessing the vein and obtaining a blood sample.

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  • 45. 

    A vein might be prone to collapse if the ______________.

    • A.

      Vaccum tube is too large for vein

    • B.

      Syringe plunger was pulled back too quickly

    • C.

      Vaccum tube lost its vacccum

    • D.

      Tourniquet was too tight

    • E.

      1,2,3,4

    • F.

      1,2,3

    • G.

      3,4

    • H.

      1,2

    Correct Answer
    F. 1,2,3
    Explanation
    The correct answer is:

    1, 2, 3

    A vein might be prone to collapse if:

    The vacuum tube is too large for the vein: Using a vacuum tube that is too large for the vein can cause excessive suction, leading to the vein's collapse.

    The syringe plunger was pulled back too quickly: Rapidly pulling back the syringe plunger can create a sudden pressure change within the vein, causing it to collapse.

    The vacuum tube lost its vacuum: If the vacuum in the tube is compromised, it may not provide the necessary suction to maintain the vein's integrity, leading to collapse.

    The option "the tourniquet was too tight" is not included in the correct choices because, while a tight tourniquet can cause discomfort and temporarily restrict blood flow, it does not typically lead to vein collapse during blood collection.

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  • 46. 

    Hemolysis would cause rejection of a sample collected for __________ testing. 

    • A.

      Potassium

    • B.

      Pregnancy

    • C.

      Rubella

    • D.

      Pyruvate

    Correct Answer
    A. Potassium
    Explanation
    Hemolysis refers to the rupture or destruction of red blood cells, leading to the release of their contents into the surrounding fluid. When a sample collected for potassium testing undergoes hemolysis, the released potassium from the damaged red blood cells can contaminate the sample, resulting in inaccurate potassium levels. Therefore, hemolysis would cause rejection of a sample collected for potassium testing.

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  • 47. 

    If a patient is prone to syncope during venipuncture, the phlebotomist should ____________. 

    • A.

      Cancel the order entirely

    • B.

      Tie the tourniquet tighter

    • C.

      Watch in case if fainting

    • D.

      Use caffeine as a stimulant

    Correct Answer
    C. Watch in case if fainting
    Explanation
    If a patient is prone to syncope during venipuncture, the phlebotomist should watch in case if fainting. This means that the phlebotomist should closely monitor the patient for any signs or symptoms of fainting during the procedure. This is important because syncope, or fainting, can be dangerous and may require immediate medical attention. By closely observing the patient, the phlebotomist can quickly respond and provide the necessary assistance if fainting occurs.

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  • 48. 

    A tube of blood that arrives in the laboratory without a label must be ___________. 

    • A.

      Labeled by the phlebotomist

    • B.

      Labeled by the doctor

    • C.

      Labeled by the nurse

    • D.

      Rejected automatically

    Correct Answer
    D. Rejected automatically
    Explanation
    If a tube of blood arrives in the laboratory without a label, it cannot be used for testing or analysis as there is no way to identify the patient it belongs to. Therefore, it must be rejected automatically to ensure patient safety and prevent any potential mix-ups or errors in the laboratory.

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  • 49. 

    If a blood sample should be collected 2 hours post-prandial, the phlebotomist should collect the sample of ________. 

    • A.

      2 hours after a meal

    • B.

      2 hours before bedtime

    • C.

      2 hours after wake-up

    • D.

      2 hours before a meal

    Correct Answer
    A. 2 hours after a meal
    Explanation
    The correct answer is 2 hours after a meal. "Post-prandial" refers to the period of time after a meal. Therefore, if a blood sample should be collected 2 hours post-prandial, it means that the sample should be collected 2 hours after a meal has been consumed.

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  • 50. 

    Knowing when to collect peak and trough levels is important when drawing ____________.

    • A.

      Blood cultures

    • B.

      Therapeutic drugs

    • C.

      Cortisol levels

    • D.

      Estrogen levels

    Correct Answer
    B. Therapeutic drugs
    Explanation
    Knowing when to collect peak and trough levels is important when drawing therapeutic drugs. This is because peak levels indicate the highest concentration of the drug in the bloodstream, which can help determine if the drug is reaching therapeutic levels and if the dosage is appropriate. On the other hand, trough levels indicate the lowest concentration of the drug in the bloodstream, which can help determine if the drug is being cleared from the body too quickly or if the dosage needs adjustment. Monitoring peak and trough levels is crucial for ensuring the effectiveness and safety of therapeutic drug treatment.

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Quiz Review Timeline +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Mar 14, 2024
    Quiz Edited by
    ProProfs Editorial Team
  • Apr 23, 2014
    Quiz Created by
    DTarver
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