The Mantoux Test is the classic, reliable screening tool for Tuberculosis (TB) exposure. This is not a blood test. It is a simple skin test where a tiny, harmless amount of "tuberculin" protein is injected just under the skin of your forearm by a healthcare professional. You must then return in 48-72 hours for us to read the result. A raised, firm bump indicates your immune system has been exposed to TB at some point. This is the gold-standard, non-invasive screening for 'latent' (sleeping) TB, which is a critical first step in protecting your long-term health.