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    Hematology Clinical Principles
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    Exam 42: Laboratory Evaluation of Hemostasis
  5. Question
    How Often Must Controls Be Run for the PT and PTT
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How Often Must Controls Be Run for the PT and PTT

Question 10

Question 10

Multiple Choice

How often must controls be run for the PT and PTT?


A) with each patient sample
B) at least once per 8-hour shift
C) at least once per 24 hours
D) with each batch of 10

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