2
Introduction
Learning Objectives
Recognizing Persons And Groups At High Risk For Tuberculosis
Identifying People to be Further Evaluated for Tuberculosis
Evaluating Patients Presenting with Symptoms Suggestive of TB
Medical History and Physical Exam
Screening and Diagnostic Tests
Collecting Sputum for Smear Examination
Point of Care Testing
Other Sputum Collection Methods
Case Detection of Tuberculosis and HIV
People with Suspected Drug-Resistant TB
Pediatric Diagnosis
Case Reporting
Contact Investigation
Target Groups for Isoniazid Preventive Therapy
Summary Module 2
Diagnosis of Tuberculosis
Main Menu
MODULE 0 - Introduction
MODULE 1 - Etiology and Pathogenesis of Tuberculosis
MODULE 2 - Diagnosis of Tuberculosis
MODULE 3 - Treatment of Patients with TuberculosisIntroduction
MODULE 4 - Special Situations
MODULE 5 - Adherence to Treatment
MODULE 6 - Patient-Physician Communication
MODULE 7 - Tuberculosis Infection Control
2.10
Screening and Diagnostic Tests
g
Tuberculin Skin Test (TST)
This reaction is quantified by measuring the diameter of skin induration (thickening not reddening) at the site of the injection.
Various conditions can suppress this reaction.
The reaction only shows that the person has at some time been infected with
M. tuberculosis.
There is a
sliding cut point based on risk of progression to TB disease.
People who are more likely to progress to active disease have lower cut point than those less likely to progress to active disease.