Interferon gamma assays used for tuberculosis testing have which of the following advantages over the tuberculin skin tests?
A) They are not affected by bacillus Calmette-Guerin vaccination.
B) They can distinguish between latent and active tuberculosis.
C) They can provide information pertaining to the presence of resistant organisms.
D) They can be used to guide therapy.

Question

Quizplus · Accepted Answer

Interferon gamma assays are not affected by prior bacillus Calmette-Guerin (BCG) vaccination, unlike the tuberculin skin test, which can give false positives in vaccinated individuals.

Interferon Gamma Assays Used for Tuberculosis Testing Have Which of the Following