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Author Question: Platelet volume normally: a. Is 15 to 20 fL b. Increases as the sample sits in ... (Read 55 times)

karlynnae

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on: Jun 25, 2018
Platelet volume normally:
 
  a. Is 15 to 20 fL
  b. Increases as the sample sits in ethylenediaminetetr aacetic acid (EDTA)
  c. Is 5 to 18 fL
  d. Is not reliable on most electronic instruments

Question 2

What is the recommended method for establishing accuracy of automated hematology analyzers?
 
  a. Use at least three levels of controls for calibration.
  b. Use whole blood calibration methodology.
  c. Use commercially prepared whole blood calibrators.
  d. Perform manual methods for comparison.


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Mollythedog

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Reply #1 on: Jun 25, 2018
Answer to Question 1

ANS: B
Platelet reference values are approximately 8 to 88 fL, and the MPV increases slightly as the sample sits in the anticoagulant EDTA.

Answer to Question 2

ANS: C
Whole blood calibrators are commercially available and are used for calibration of instruments. However, inherent problems exist with their use because these are stabilized and preserved cell suspensions that can deteriorate, and the calibration must be validated before the instrument is used for patient specimen analysis.


karlynnae

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Reply 2 on: Jun 25, 2018
Gracias!

rachel

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Reply 3 on: Yesterday
Excellent

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