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A member asked:
What does it mean if i have a negative tb skin test yet a positive blood one?
A doctor has provided 1 answer
IMMUNE PROBLEM: Both tests detect prior exposure to TB. A situation of diminished immune function, called anergy, can make the skin test appear negative. If you have a positive blood test you will need to have a CXR to exclude active infection and may need prophylaxis .
Answered 5/10/2018
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