Some people who have received the vaccine may also get a false positive result on a tuberculin skin test (TST), which can complicate treatment plans and lead to confusion.

Dear Dr. Roach: I had a tuberculosis (TB) skin test for my new job in May, and it was negative. They did a blood test in July. I have a question about a positive T-SPOT blood test for TB. They did ...

DEAR DR. ROACH: I had a tuberculosis (TB) skin test for my new job in May, and it was negative. They did a blood test in July. I have a question about a positive T-SPOT blood test for TB.

If your blood or skin tests come back positive for TB, your provider may conduct other tests, such as a chest X-ray or a test of your sputum (the mucus when you cough) for bacteria.

This is because the vaccine is known to sometimes cause a false-positive with the skin test. Once a doctor determines that you have inactive or active TB, medication will be prescribed to get rid ...

Having a positive skin test indicated only one thing: I had, at some point, been exposed to TB bacteria. It's possible my body fought it off, which is why I never developed symptoms.

A healthcare team may suggest a blood test for TB. This is because people who have received a TB vaccination may show a false-positive reaction to the PPD test. Who should get a PPD skin test?

Researcher found that exposed individuals with confirmed TB infection -- i.e. a positive skin or blood test -- should receive priority treatment in settings with a low prevalence of the disease ...