People with TB infection have TB germs in their bodies, but they are not sick because the germs are not active. These people do not have symptoms of TB disease and they cannot spread the germs to others. However, they may develop TB disease in the future. They are often prescribed treatment to prevent them from developing TB disease.
The general symptoms of TB disease include feelings of sickness or weakness, weight loss, fever, and night sweats. The symptoms of TB disease of the lungs also include coughing, chest pain, and the coughing up of blood. Symptoms of TB disease in other parts of the body depend on the area affected.
There are two tests that can be used to help detect TB infection:
The Mantoux tuberculin skin test (TST) is performed by injecting a small amount of fluid into the skin in the lower part of the arm. A person given the TST must return within 48 to 72 hours to have a health care worker look for a reaction on the arm; this must be done in-person. This type of testing is only done in our TB clinic for children under age 2. All other ages above 2 will receive a TB blood test.
The TB blood test, known as the Interferon Gamma Release Assay (IGRA), T-SPOT®.TB test measures how the patient’s immune system reacts to the germs that cause TB when present.
A positive TST or blood test only tells you if you have TB germs in your body. Other tests may be needed to tell if you have TB disease, such as a chest x-ray (CXR) and other laboratory testing of sputum.
If you have TB infection but not TB disease, your doctor may want you to take a drug to kill the TB germs and prevent you from developing TB disease.
TB screening program that serve high-risk groups.
TB testing for identified individuals who recently spent time in an enclosed area with a person suspected of having tuberculosis (TB) disease.
Tuberculosis germs are released into the air when an individual with active TB disease of the lungs or throat coughs, sneezes, or speaks. Breathing in these germs causes a latent TB infection, which requires professional medical monitoring to prevent it from developing into an active, contagious disease.
Treating active TB disease requires taking multiple prescribed antibiotics for exactly 6 to 12 months. Patients must finish the complete medication cycle without interruption, as stopping early can cause the surviving germs to become highly drug-resistant and much harder to treat.
Even if you carry a latent TB infection without feeling sick, those dormant germs can unexpectedly develop into active TB disease in the future. Our clinical providers often prescribe preventative medications to safely eliminate these germs early, protecting your long-term health and preventing transmission.
Active TB disease symptoms typically include severe coughing, chest pain, coughing up blood, unexplained weight loss, fever, and night sweats. If you or a loved one present these severe symptoms, do not wait and go immediately to an emergency room.