A 34-year-old member asked:
What does it mean if i have a negative tb skin test yet a positive blood one?
1 doctor answer • 3 doctors weighed in
Pediatrics 41 years experience
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 .
3.7k viewsReviewed >2 years ago
A 40-year-old member asked:
Could a positive TB skin test mean you always have tb?
1 doctor answer • 2 doctors weighed in
Pediatrics 54 years experience
POSITIVE PPD: NO. Sometimes it is due to immunization given before. Take a chest x-Ray to find any lesion in the lungs.
4k viewsAnswered >2 years ago
Last updated May 10, 2018
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