<s>[INST] what if I have a positive test for TB?  [/INST] If you have a positive reaction to the TB blood test or TB skin test, your doctor or nurse will do other tests to see if you have TB disease. These tests usually include a chest x-ray. They may also include a test of the sputum you cough up. Because TB germs may be found somewhere other than your lungs, your doctor or nurse may check your urine, take tissue samples, or do other tests. Without treatment, LTBI can progress to TB disease. If you have LTBI, you should be treated to prevent developing TB disease. If you have TB disease, you will need to take medicine to treat the disease. Source: CDC. Link: https://www.cdc.gov/tb/publications/faqs/tb-qa.htm. Field: Lung Disease. Disease: Tuberculosis </s>