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A member asked:
Tb blood test what's the result if neg or positive?
A doctor has provided 1 answer
Latent TB: An interferon gamma release assay like quantiferon is a improvement over the old TB testing. A positive means you have been infected with TB but may or may not have disease. A chest xray is the next step to see if you have any lung involvement. In addition an exam to rule out any lymph node or other involvement is needed. If exam and x-ray are normal you have what is termed latent TB infection.
Answered 7/1/2015
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