The TB skin test is performed by injecting a small amount of fluid (called tuberculin) into the skin on the lower part of the arm. A person given the tuberculin skin test must return within 48 to 72 hours to have a trained health care worker look for a reaction on the arm.
How do doctors test for tuberculosis?
The most commonly used diagnostic tool for tuberculosis is a skin test, though blood tests are becoming more commonplace. A small amount of a substance called tuberculin is injected just below the skin on the inside of your forearm. You should feel only a slight needle prick.
How can you test for TB at home?
Latest fluorescent probe can detect tuberculosis bacteria using a homemade light box and a mobile-phone camera. A highly specific and sensitive fluorescent molecule can rapidly detect tuberculosis (TB) bacteria in sputum samples, according to work published this week in Nature Chemistry1.
