Diluting Blood for White Cell Count Quiz
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Questions and Answers

What is the main cause of crenated cells?

  • Moisture in the air
  • Too cold temperature (correct)
  • Increased levels of lipids
  • Uneven pressure

    • What is the purpose of the spinner method?

  • To introduce moisture into the blood sample
  • To create crenated cells
  • To increase lipid levels in the blood sample
  • To spread blood evenly on a slide (correct)

    • What is the Beacom technique also known as?

  • Two-Cover Slip method (correct)
  • Ehrlich method
  • Spinner method
  • Hemaspinner technique

    • What should be avoided when making a coverslip smear using the Ehrlich method?

    <p>Squeezing the cover glasses together</p> Signup and view all the answers

    What happens if a drop of blood is not allowed to spread across the width of the spreader slide?

    <p>Water artifact occurs</p> Signup and view all the answers

    What is the primary issue caused by hesitation or interruption during slide preparation?

    <p>Water artifact occurrence</p> Signup and view all the answers

    Why should blood not be allowed to completely spread before separating cover glasses in a coverslip smear?

    <p>To form a specific figure</p> Signup and view all the answers

    What is the purpose of air-drying the cover glass after making a smear?

    <p>To avoid water artifact issues</p> Signup and view all the answers

    What does the Hemaspinner instrument achieve in slide preparation?

    <p>Spins 3-4 drops of blood evenly on a slide</p> Signup and view all the answers

    What is the primary purpose of the erythrocyte sedimentation rate (ESR) test?

    <p>To measure the rate at which red blood cells aggregate and settle out of the plasma</p> Signup and view all the answers

    Which of the following statements about the ESR test is NOT true?

    <p>It is a specific test for detecting active infections like tuberculosis or rheumatic fever</p> Signup and view all the answers

    What is the primary advantage of the Wintrobe-Landsberg method for measuring ESR?

    <p>It uses a specially calibrated Wintrobe tube, which improves accuracy</p> Signup and view all the answers

    According to the provided information, which of the following steps is NOT part of the Wintrobe-Landsberg method for measuring ESR?

    <p>Centrifuge the blood sample before transferring it to the Wintrobe tube</p> Signup and view all the answers

    What is the principle behind the erythrocyte sedimentation rate (ESR) test?

    <p>It quantifies the rate at which red blood cells sediment and form a packed column in the tube</p> Signup and view all the answers

    Which of the following factors does NOT influence the erythrocyte sedimentation rate (ESR)?

    <p>The hematocrit (red blood cell count) of the sample</p> Signup and view all the answers

    Which of the following statements about the erythrocyte sedimentation rate (ESR) test is true?

    <p>It is a non-specific test that can be influenced by various factors</p> Signup and view all the answers

    What is the purpose of using an anticoagulant in the blood sample for the erythrocyte sedimentation rate (ESR) test?

    <p>To facilitate the sedimentation of red blood cells and formation of a packed column</p> Signup and view all the answers

    According to the provided information, what is the approximate time required for the red blood cells to sediment and form a packed column in the Wintrobe-Landsberg method?

    <p>1 hour</p> Signup and view all the answers

    Which of the following statements about the Wintrobe-Landsberg method for measuring ESR is true?

    <p>Its advantages outweigh its few drawbacks, making it a commonly used method</p> Signup and view all the answers

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