Peripheral Blood Smear

19 Questions | Total Attempts: 5257

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Peripheral Blood Smear

A blood smear seeks to check out for abnormalities in the three main blood cells that are red cells, white cells and platelets. Find out from the quiz what you need to know about peripheral blood smear. All the best.


Questions and Answers
  • 1. 
    The factors that affect the quality of a blood smear
    • A. 

      The size of the drop of blood

    • B. 

      The angle of the spreader slide

    • C. 

      The speed at which the smear is made

    • D. 

      The colorfulness of the slide

  • 2. 
    Features of a good blood smear
    • A. 

      The smear should cover about three-fourths of the slide

    • B. 

      The smear should show a gradual transition from thick to thin

    • C. 

      It should have a smooth appearance

    • D. 

      A feathered edge (about 1.5 cm long)

    • E. 

      The smear should have no holes or ridges

    • F. 

      Microscopically, the cells should be evenly distributed

    • G. 

      Microscopically. there should be an area at the tin end of the smear where RBCs are not overlapping

    • H. 

      The smear should look black

    • I. 

      There show be a transition of thin to thick to thin on the slide

  • 3. 
    Wright stain kit that  contains three separate components;, a fixative, a red dye such as eosin, and a blue due such as methylene
    • A. 

      Quick stain

    • B. 

      Two step method

  • 4. 
    Wrights stain procedure in which smear is placed  on a staining rack and flooded with wright's stain, after which an equal volume of buffer is added dropwise
    • A. 

      Quick stain

    • B. 

      Two step method

    • C. 

      Option 3

    • D. 

      Option 4

  • 5. 
    The two types of automatic stainers are
    • A. 

      Moving belt that carries slides through the staining reagent

    • B. 

      Basket or batch type in which baskets of slides are taken through the staining process

    • C. 

      Dancng cup

    • D. 

      Moving shoe method

  • 6. 
    Two commonly use hematology blood stains are
    • A. 

      Wright's stain

    • B. 

      Giemsa Stain

    • C. 

      Koh

    • D. 

      Inidaink

  • 7. 
    Requirements for storing Blood smears
    • A. 

      Dust-free

    • B. 

      Dark

    • C. 

      Protected away for moisture

    • D. 

      Stored in wet box

  • 8. 
    A properly stained smear should appear
    • A. 

      pinkish blue to the naked eye

    • B. 

      Yellowish green

    • C. 

      Reddish brown

  • 9. 
    If a dried smear cannot be stained immediately, it should be preserved by immersing in 
    • A. 

      Methanol

    • B. 

      Ethanol

    • C. 

      Eosin

    • D. 

      Methylene blue

  • 10. 
    The most preferred specimen for blood smear is
    • A. 

      Arterial blood gas

    • B. 

      Capillary blood

    • C. 

      Heparin anti-coagulated venous blood

    • D. 

      Blood culture specimen

  • 11. 
    Platelets tend to clump more rapidly in
    • A. 

      Capillary blood

    • B. 

      EDTA anticoagulated blood

  • 12. 
    Which anticoagulant minimally alters the morphology of the blood cells and staining characteristrics of cells
    • A. 

      Ethylenenediaminetetraacetic acid

    • B. 

      Potassium oxalate

    • C. 

      Sodium fluoride

  • 13. 
    All smears from anticoagulated EDTA blood should be made within_______ hours  of blood collection
    • A. 

      1

    • B. 

      2

    • C. 

      3

    • D. 

      4

  • 14. 
    All smears should be stained within __________________ hour of being pepared
    • A. 

      1

    • B. 

      2

    • C. 

      3

    • D. 

      4

  • 15. 
    Using a two slide (wedge) method of preparing a peripheral blood smear, the end of the spreader slide is brought to rest at a ________________ angle in front of the drop of blood.
    • A. 

      10-15 degrees

    • B. 

      30-35 degrees

    • C. 

      50-55 degrees

    • D. 

      70-75 degrees

  • 16. 
    The end of the spreader slide should be brought back into the blood until the drop spreads along
    • A. 

      Half of the edge of the spreader slide

    • B. 

      Two-thirds of the edge of the spreader slide

    • C. 

      Three-quaters of the edge of the spreader slide

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