Basics Of Medical Laboratory Practice

25 Questions | Total Attempts: 2270

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Basics Of Medical Laboratory Practice

When patients’ samples are sent to the lab it is the duty of a lab technician to ensure that they are not tampered with and carry out tests. How conversant are you with some of the basic information one has to have when it comes to laboratory practices? Take the quiz and find out.


Questions and Answers
  • 1. 
    What are the electrical equipment Medical Laboratory Scientists most often deal with?
    • A. 

      Fridges/Freezers

    • B. 

      Ovens/ stovetops

    • C. 

      Centrifuges

    • D. 

      Incubators

    • E. 

      Water baths

  • 2. 
    Horizontal rotor centrifuges achieve higher RCF than Fixed Angle rotors?
    • A. 

      True

    • B. 

      False

  • 3. 
    What are the types of centrifuges?
    • A. 

      Horizontal rotor

    • B. 

      Fixed Angle

    • C. 

      Ultra-centrifuges

    • D. 

      A and B

    • E. 

      All of the above

  • 4. 
    In using centrifuge, specimens must be spun _________?
    • A. 

      Without a cap on

    • B. 

      With a cap on

  • 5. 
    Micro collection tubes (such as Microtainer) can be spun in centrifuges if they are placed inside an empty test tube
    • A. 

      True

    • B. 

      False

  • 6. 
    Ideally all centrifuges should be placed and operated in____?
    • A. 

      Inside a biological safety cabinet

    • B. 

      A fume hood

    • C. 

      On the counter top

  • 7. 
    Centrifuges spin blood specimens with an average g force ranging _______?
    • A. 

      1000g-3000g

    • B. 

      2000g-4000g

    • C. 

      3000g-5000g

  • 8. 
    If the centrifuge is not properly loaded and balanced, which of the following may occure?
    • A. 

      Causes undue wear on rotor

    • B. 

      Causes excessive vibration which could lead the centrifuge to move aff counter top

    • C. 

      Cause unbalanced tube to break

    • D. 

      Cause redblood cells to float to top

  • 9. 
    How many minutes is an acceptable time for a centrifuge to spin blood specimens?
    • A. 

      5-10 min

    • B. 

      10-15 min

    • C. 

      15-20 min

  • 10. 
    What is the primary purpose of a centrifuge?
  • 11. 
    What should be used in a water bath?
    • A. 

      Tap water

    • B. 

      Boiled water

    • C. 

      Distilled water

    • D. 

      Purified water

  • 12. 
    The following is the proper way to clean what instrument? 1. Unplug unit and empty 2. Wipe down the interior surface with a damp cloth and mild disinfectant solution refill with purified water to the appropriate level needed
    • A. 

      Centrifuges

    • B. 

      Incubators

    • C. 

      Water baths

  • 13. 
    The following is the proper way to clean what instrument?  If a spill or breakage occurs , the Medical Technologist must wear gloves and spray disinfectant onto the surface allowing it to soak . Then use a damp cloth, wipe the interior to remove blood and pulverized glass.The Bung must be replaced.
    • A. 

      Centrifuge

    • B. 

      Incubator

    • C. 

      Water bath

  • 14. 
    What is a bung?
    • A. 

      The lid of the centrifuge

    • B. 

      The plastic or rubber mat on the bottom of the centrifuge

    • C. 

      The plastic or rubber mat on the bottom of each cup in the centrifuge

  • 15. 
    Water bath temperatures in the Blood Banking-Transfusion Services must be set at ____ degrees C  when used for ongoing daily work.
    • A. 

      4 C

    • B. 

      37 C

    • C. 

      35 C

  • 16. 
    What laboratory sections may also use a water bath?
    • A. 

      Hematology

    • B. 

      Chemistry

    • C. 

      Histopathology

  • 17. 
    How often should the temperature of a water bath be checked?
    • A. 

      Once a day

    • B. 

      Once when filling

    • C. 

      Once a day and each time it is used

  • 18. 
    What are the types of air incubators?
    • A. 

      Normal (aerobic) incubator

    • B. 

      Anaerobic chamber

    • C. 

      CO2 incubator

    • D. 

      Water incubator

  • 19. 
    The interior of an incubator should be_____  when cleaning?
    • A. 

      Filled with a disinfectant and rinsed

    • B. 

      Wiped down with a disinfectant solution

    • C. 

      Sprayed down with a disinfectant solution and left to sit for 5 min.

  • 20. 
    Why is it critical to monitor the temperature of laboratory refrigerators?
    • A. 

      To maintain the integrity of the products stored

    • B. 

      Some fluctuation is allowed and should not raise alarm

    • C. 

      So your lunch doesn't spoil and create an outbreak of Salmonella

  • 21. 
    Glass wares should be soaked prior to washing. Should be washed in very warm soapy water, using brushes and cloths as necessary. The glassware is then rinsed 5 times with warm tap water. Then rinsed  3 times with distilled water?
    • A. 

      True

    • B. 

      False

  • 22. 
    After the final rinse the glassware should be ______?
    • A. 

      Inspected to examine the surface of the glassware

    • B. 

      Once wet with purified water, the surface should be coated with a film of water

    • C. 

      Once wet with purifies water , the surface should run clean from any water

    • D. 

      There should be beads or oily patches where the water does not coat uniformly on the glassware

    • E. 

      There should be no beads or oily patches where the water does not unifomly coat the glassware surface.

  • 23. 
    Select the urine specimen that does not indicate the possible presence of blood or hemoglobin
    • A. 

      A clear red urine

    • B. 

      A cloudy brown urine

    • C. 

      A clear brown urine

    • D. 

      A cloudy amber urine

  • 24. 
    A urine that produces a large amount of white foam when mixed should be suspected to contain increased amounts of:
    • A. 

      Bilirubin

    • B. 

      Protein

    • C. 

      Urobilin

    • D. 

      Urobilinogen

  • 25. 
    Variation in erythrocyte shape:
    • A. 

      Macrocyte

    • B. 

      Minicyte

    • C. 

      Anisocytosis

    • D. 

      Poikilocytosis

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