Question

You have been told that you must get your annual purified protein derivative​ (PPD) test for tuberculosis​ (TB). As a knowledgeable​ EMT, you recognize that the PPD​ will:

A.
determine if you have been exposed to TB.
B.
determine the effectiveness of treatment for TB.
C.
reveal if you need a TB immunization.
D.
provide continued immunity to tuberculosis.

Answer 1

The PPD test for TB is used to determine if you have been exposed to TB. A positive test indicates a cellular immune response to the bacteria.

Step-by-step explanation:

The annual purified protein derivative (PPD) test for tuberculosis (TB) is used to determine if you have been exposed to TB. It involves injecting bacterial proteins from M. tuberculosis into the skin, and if you have been exposed to the bacteria, a positive test is indicated by a raised red area called an induration. This is a consequence of the cellular immune response to the bacteria.