A positive TB skin test or TB blood test only tells that a person has been infected with TB bacteria. It does not tell whether the person has latent TB infection (LTBI) or has progressed to TB disease. Other tests, such as a chest x-ray and a sample of sputum, are needed to see whether the person has TB disease.

A firm bump that is 15 mm (0.6 in.) in size suggests a TB infection in people who are in a low-risk group. A positive tuberculin skin test does not mean you have a contagious (active) infection. ... More tests-such as a chest X-ray, a sputum culture, or both-are usually done to see if you have an active TB infection. Ucenter Dress maid of honor wears in fuchsia color