Which of the following is true regarding laboratory tests for tuberculosis?
A) A positive tuberculin (Mantoux) skin test (TST) means that the person has clinically active tuberculosis.
B) The interferon-gamma release assay (IGRA) is administered by intradermal injection of 0.1 mL of purified protein derivative (PPD) .
C) All dentists should undergo annual tuberculin skin testing.
D) The IGRA test can discriminate active from latent infection.
Correct Answer:
Verified
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