Phlebotomy Final Test Practice Test

100 Questions | Total Attempts: 87

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Phlebotomy Final Test Practice Test

In the most basic terms, phlebotomy is a medical procedure, which involves the incision into a vein using a needle. It is also known as venipuncture. It is mostly used to administer medication and the practice test below has more.


Questions and Answers
  • 1. 
    Capillary blood gases are less desirable than arterial blood gases (ABGs) for what following 3 reasons?
    • A. 

      Skin puncture blood is only partial arterial

    • B. 

      Skin puncture blood contains tissue fluid

    • C. 

      The blood is exposed to air during collection

    • D. 

      All of the above are correct

  • 2. 
    The Clinical and Laboratory Standards Institute (CLSI) recommends the maximum depth of a heel puncture is?
    • A. 

      2.0mm

    • B. 

      1.5mm

    • C. 

      2.5mm

    • D. 

      1.0mm

  • 3. 
    EDTA specimens are obtained before other specimens when collected by skin puncture, why?
    • A. 

      Drawing EDTA first, because it is the recommended order of draw

    • B. 

      Due to lack of blood from the patient

    • C. 

      To minimize platelet clumping

    • D. 

      So phlebotomist can transport to lab immediately

  • 4. 
    What is the safest area for an infant heel puncture?
    • A. 

      Central area of the heel

    • B. 

      Lateral planter heel surface

    • C. 

      Medial area of the arch

    • D. 

      Posterior curvature of the heel

  • 5. 
    What is the purpose of wiping away the first drop of blood during skin puncture?
    • A. 

      To make sure area is cleaned well

    • B. 

      Protocol for phlebotomist

    • C. 

      To minimize blood loss

    • D. 

      To eliminate tissue fluid contamination

  • 6. 
    A capillary puncture should be done rather than a venipuncture except in what following situation?
    • A. 

      When the blue top tube is needed

    • B. 

      Should always do capillary puntures unless instructed to do so

    • C. 

      When the red top tube is needed

    • D. 

      When a green top tube is needed

  • 7. 
    A purple top microcollection container would be used to collect a specimen for what test?
    • A. 

      INR

    • B. 

      CBC

    • C. 

      PT

    • D. 

      Hct

  • 8. 
    A hereditary inability to metabolize phenylalanine is called?
    • A. 

      Galoctosemia

    • B. 

      Hypothyroidism

    • C. 

      Phenylketonuria

    • D. 

      Cystic fibrosis

  • 9. 
    The purpose of warming the site before skin puncture is to?
    • A. 

      It comforts the patient

    • B. 

      It makes the veins more visible

    • C. 

      It increases blood flow up to 7 times

    • D. 

      It prevents hemolysis of the sample

  • 10. 
    To make a thick blood smear you should take a large drop of blood and spread it to the size of a
    • A. 

      Finger

    • B. 

      Top of your thumb

    • C. 

      Dime

    • D. 

      Penny

  • 11. 
    Fluid that comes from between tissue cells is known as
    • A. 

      Tissue fluid

    • B. 

      Serous fluid

    • C. 

      Cerebral spinal fluid

    • D. 

      Interstitial fluid

  • 12. 
      A capillary puncture site should not appear
    • A. 

      Wet

    • B. 

      Purple

    • C. 

      Cyanotic

    • D. 

      Bruised

  • 13. 
    A good blood smear should exhibit a ________ edge.
    • A. 

      Smooth

    • B. 

      Jagged

    • C. 

      Feathered

    • D. 

      Rough

  • 14. 
      Capillary bilirubin specimens should be protected from
    • A. 

      Heat

    • B. 

      Light

    • C. 

      Refrigerated

    • D. 

      Centrifuged

  • 15. 
    A microhemocrite tube is not primarily used for what type of specimen.
    • A. 

      CBC

    • B. 

      LDL

    • C. 

      Blood Culture

    • D. 

      Biliruben

  • 16. 
      If a baby has a huge, fleshy big toe, is it acceptable to collect a bilirubin specimen from it?
    • A. 

      True

    • B. 

      False

  • 17. 
    A patient who has just awakened at 0600 after fasting all night is an instance that most closely resembles a
    • A. 

      Basel state

    • B. 

      Steady state

    • C. 

      Resting state

    • D. 

      Awaken stage

  • 18. 
    When you are ordered to draw a protime specimen from a patient with an IV in both arms, where is it best to draw the specimen?
    • A. 

      Should not be done unless Dr. approved

    • B. 

      Below or distal from the I.V. site

    • C. 

      Above the I.V. site

    • D. 

      Capillary Puncture

  • 19. 
      It is not a good idea to collect a CBC specimen from a screaming infant because?
    • A. 

      Will show elevated white blood cell counted

    • B. 

      Will show decreased white blood cell count

    • C. 

      Will show elevated red blood cell count

    • D. 

      Will show decreased red blood cell count

  • 20. 
    Prolonged tourniquet application may cause a change in blood composition primarily because of?
    • A. 

      Hemolized

    • B. 

      Hemoconcentration

    • C. 

      Autoglaus

    • D. 

      Metabolism

  • 21. 
            A __________ is a vascular access device that is placed in a peripheral vein for the purpose of blood collection and administration of medication.
    • A. 

      Catheter line

    • B. 

      PIC line

    • C. 

      Direct line

    • D. 

      Heparin line or saline line

  • 22. 
    If a phlebotomist has attempted twice to draw a partial thromboplastin time (PTT) specimen from a patient with difficult veins, and both times has been able to draw only  a partial tube what should they do? 
    • A. 

      Attempt to draw from other arm

    • B. 

      Tell patient to come back later

    • C. 

      Get a more experienced phlebotomist to do the draw

    • D. 

      None of the above

  • 23. 
    Levels of Cortisol (an analyte) can differ by____ % or more between morning and late afternoon.
    • A. 

      25

    • B. 

      40

    • C. 

      30

    • D. 

      50

  • 24. 
      If blood pulses in to the tube this is an instance in which may lead you to suspect that you have accidentally punctured an
    • A. 

      Hematoma

    • B. 

      Basilic vein

    • C. 

      Artery

    • D. 

      Both a &c are correct

  • 25. 
    If blood is drawn too quickly from a small vein, the vein will have a tendency to
    • A. 

      Lack blood flow

    • B. 

      Collapse

    • C. 

      Breakdown

    • D. 

      Cause large hematoma

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