Practice Quiz

HT Histotechnician

Category - Laboratory Operations

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How many micrometers should a histotechnician cut a tissue that is to be cut in 0.5 micra of thickness?
  1. 0.5 um
  2. 50 micometers
  3. 500 mcm
  4. 0.005 micrometers
Explanation
Answer: A - 0.5 um
One small unit of measurement used in the clinical laboratory is the micrometer. The old usage of the unit is in micron and takes the plural form of microns or micra. Therefore, 0.5 micra is equivalent to 0.5 microns, and it is also the same as 0.5 micrometers or 0.5 um. All the other choices are inaccurate conversions of the unit specified in the question.
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