Question

A child and the family were exposed to Mycobacterium tuberculosis about two months ago. For confirmation of the presence or absence of an infection in their system, it is important for all family members to have which test?

A. Blood culture and sensitivity
B. Sputum culture and sensitivity
C. Chest x-ray without contrast
D. Purified protein derivative (PPD) test

Answer 1

The important test for all family members to have in order to confirm the presence or absence of a Mycobacterium tuberculosis infection is the Purified protein derivative (PPD) test.

Step-by-step explanation:

The test that is important for all family members to have in order to confirm the presence or absence of a Mycobacterium tuberculosis infection is the Purified protein derivative (PPD) test. This test is a type of tuberculin skin test where bacterial proteins from M. tuberculosis are injected into the skin. A positive result indicates that the patient has been exposed to the bacteria and exhibits a cellular immune response to it. It is important to note that a positive PPD test does not necessarily mean that the patient is currently infected with active TB.