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Further Questions on this Topic ( 18 Questions)
Question 1 of 18 :
A nurse is interpreting the results of a diagnostic test for a client who has tuberculosis, a chronic infectious disease caused by Mycobacterium tuberculosis that primarily affects the lungs. The test involves injecting a purified protein derivative (PPD) of the bacterium under the skin and measuring the induration (raised area) after 48 to 72 hours.
Which of the following results indicates a positive reaction for the client?
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