A diagnostic test for M. tuberculosis exposure
A) utilizes an inflammatory reaction that occurs if there has been previous exposure to M. tuberculosis antigens.
B) relies on previous tuberculin vaccination.
C) uses an antiserum to detect antibodies in the blood that are only formed if there has been previous exposure to M. tuberculosis antigens.
D) relies on an innate immune response that occurs only if there has been previous exposure to M. tuberculosis antigens.

Question

Quizplus · Accepted Answer

A diagnostic test for M. tuberculosis exposure utilizes an inflammatory reaction that occurs if there has been previous exposure to M. tuberculosis antigens. This is usually done through a skin test called the Mantoux test, where a small amount of purified protein derivative (PPD) of M. tuberculosis is injected into the skin and observed for an inflammatory response. The presence of an inflammatory response indicates previous exposure to the bacteria.

A Diagnostic Test for M. Tuberculosis Exposure