TB diagnostics

Tuberculosis (TB) diagnostics include tests to detect the bacteria causing TB or your body’s response. The most common is the skin test (Mantoux), where a small amount of fluid is injected under the skin, and a reaction is checked after 48-72 hours. Blood tests (like the interferon-gamma release assay) measure immune response to TB bacteria. Microbiological tests involve analyzing sputum (mucus from lungs) under a microscope or growing bacteria in a lab to confirm active infection. Imaging, such as chest X-rays, help identify lung changes typical of TB. Combining these methods ensures accurate diagnosis and appropriate treatment.