The tuberculosis screening test is considered positive if the induration is

Question

Quizplus · Accepted Answer

The tuberculosis screening test is done using a Mantoux tuberculin skin test. The induration or swelling at the site of injection is measured after 48-72 hours. A positive test is determined by the size of the induration in millimeters. In healthy individuals without any risk factors for tuberculosis, a positive test is defined as an induration of 10mm or greater. In individuals with an increased risk of tuberculosis, such as HIV-positive individuals, recent immigrants from high burden countries, or individuals who have been in contact with active tuberculosis cases, a positive test is defined as an induration of 5mm or greater. Therefore, the most appropriate answer is C.

The Tuberculosis Screening Test Is Considered Positive If the Induration