The nurse works in a clinic and is performing tuberculosis (TB) screening with the purified protein derivative (PPD) . Which option about PPD screening is correct?
A) The test is positive if reddened area occurs within 48 to 72 hours.
B) If a person is anergic, a larger area of induration will appear.
C) A positive reaction to the test indicates active disease process.
D) A reddened area without induration is considered negative.
Correct Answer:
Verified
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