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Phlebotomy Certification Questions 4

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  • Which cellular component is responsible for the transport of hemoglobin?
    Electrolytes
    WBCs
    RBCs
    Plasma
  • The additive sodium citrate is used in blood collection to test for
    Blood alcohol
    Lead
    Prothrombin time
    Lactic acid
  • Serum contains
    Fibrinogen
    Clotting factors
    Plasma
    None of the above
  • Which of the following is not an anticoagulant?
    Polymer gel
    Sodium heparin
    Sodium citrate
    EDTA
  • EDTA prevents coagulation in blood tubes by
    Binding calcium
    Inactivating thrombin
    Inactivating thromboplastin
    Inhibiting glycolysis
  • Which blood vessels are a single cell in thickness?
    Arteries
    Arterioles
    Veins
    Capillaries
  • The most common antiseptic used in routine venipuncture is
    Chlorhexidine gluconate
    Povidone-iodine solution
    Isopropyl alcohol
    Bleach
  • Platelets remain in the circulation for
    1 month
    9 to 12 days
    10 to 20 days
    2 to 5 days
  • Plasma constitutes _____% of total blood volume.
    55
    80
    45
    92
  • Blood collected in light blue0topped tubes is used for which test?
    Toxicology
    Sedimentation rate
    Coagulation
    Glucose tolerance
  • Another name for WBC is
    Erythrocyte
    Reticulocyte
    Leukocyte
    Electrolyte
  • An average adult has ____L of blood.
    7 to 8
    1 to 2
    3 to 4
    5 to 6
  • Which color-coded tube does not contain any additives?
    Red, plastic tube
    Red, glass tube
    Gold BD Hemogard Closure
    Royal blue
  • A characteristic of arteries is
    They are composed of a single layer of endothelial cells
    They have valves along the lumen
    They have a thick muscle layer lining the lumen
    The carry blood toward the heart
  • In the circulatory system, gas exchange occurs in the
    Capillaries
    Veins
    Arteries
    Venules
  • Which organ is not included in the lymphatic system?
    Tonsils
    Liver
    Spleen
    Thymus
  • The most common gauge used for routine venipuncture is
    21
    25
    16
    23
  • Complete clotting of a blood sample in an SST (gold or red-gray) tube takes ______ minutes at room temperature
    30
    60
    45
    10
  • Tubes containing the SPS anticoagulant are used for
    Nutritional analysis
    Blood culture analysis
    Antibody screen
    HLA studies
  • Helper T cells are needed to make
    Cytokines
    Interleukins
    Antigens
    Antibodies
  • How many times may a needle be used before discarding it?
    1
    3
    No limit
    2
  • The main function of leukocytes is to
    Protect the body against infection
    Transport lipids
    Transport hemoglobin
    Recycle RBC’s
  • Which laboratory test does not assist in diagnosing HIV infection?
    T-cell count
    Western blot
    Anti-HIV antibody
    aPTT
  • Tubes with green tops may contain
    Sodium oxalate
    Sodium heparin
    Sodium phosphate
    Sodium citrate
  • The syringe method of raw is useful because
    It allows for greater flexibility and less bulk
    It allows for control of blood flow
    Both a & b
    It shows the appearance of blood at the hub
  • The smaller the gauge number, the
    Larger the lumen diameter
    Smaller the lumen diameter
    Shorter the needle
    Longer the needle
  • Blood collected in gray-topped tubes is used for which test?
    FBS
    Stat chemistry
    Stat potassium
    CBC
  • Veins and arteries are composed of how many layers?
    2
    4
    3
    1
  • Blood collection tubes containing an anticoagulant should be
    Shaken aggressively after blood collection
    Allowed to sit for 30 minutes before centrifugation
    Inverted gently and repeatedly after blood collection
    Centrifuged immediately
  • Blood banks use a ______ gauge needle to collect blood from donors for transfusion.
    20 to 22
    16 to 18
    22 or 23
    23 to 25
  • Blood collected in lavender-topped tubes is used for which test?
    Stat potassium
    CBC
    Stat chemistry
    FBS
  • Tubes with gray tops are used for
    CBC
    Glucose tolerance tests
    Sedimentation rate tests
    Coagulation studies
  • A group of inherited disorders marked by increased bleeding times is known as
    Hemophilias
    Polycythemias
    Leukemias
    Anemias
  • Which leukocyte is known as a phagocyte?
    Eosinophil
    Basophil
    Lymphocyte
    Neutrophil
  • Which of the following indicates the largest-sized needle?
    16 gauge
    20 gauge
    21 gauge
    23 gauge
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