The Nurse Is Administering a Purified Protein Derivative (PPD)test to a Homeless

The nurse 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.

Correct Answer:

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