Nurse Mickey is administering a purified protein derivative (PPD) test to a homeless client. Which of the following statements concerning PPD testing is true? a. A positive reaction indicates that the client has active tuberculosis (TB). b. A positive reaction indicates that the client has been exposed to the disease. c. A negative reaction always excludes the diagnosis of TB. d. The PPD can be read within 12 hours after the injection.
Posted on: Thu, 22 Aug 2013 01:44:41 +0000
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