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A member asked:
Took a tb test last monday & the nurse said it was negative on wednesday but now i have a red spot should i worry?
3 doctors weighed in across 2 answers
Not reversible: It is common for people to have some allergy to the components of the test medicine. The reaction for positive test is specifically the bump felt and not the redness. It will go away.
Answered 12/2/2013
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Don't worry: A TB skin test is read at 48 hours. If it was read as negative it means that you do not have TB infection. I do not know what the red spot means.
Answered 6/10/2014
4.7k views
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