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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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Why The Area Is Raised Where The TB Test Was Done?

I had a TB test done on June 5, 2012 and had the results read on June 7, 2012 which was 0mm. Today is the 13th and I am noticing a raised area where the test was given. Should I be concerned now that it has been 6 days since the reading has been done? Could I have TB?
Fri, 18 Sep 2015
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Pulmonologist,  's  Response
Thanks for your question on Health Care Magic.
I can understand your concern.
No need to worry for tuberculosis in your case.
You are showing delayed reaction and it is suggestive of either vaccination or immunity against tuberculosis.
You had montoux test (MT). In which tubercular antigens are injected in the skin. If reaction develops within 48-72 hours than possibility of TB infection is more.
After 48-72 hours, if reaction occur than this suggests previous vaccination with BCG or immunity against tuberculosis.
So in your case, you developed skin reaction after 6 days, so you are not having infection.
So no need to worry for tuberculosis in your case.
Hope I have solved your query.
I will be happy to help you further.
Wish you good health. Thanks.
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Why The Area Is Raised Where The TB Test Was Done?

Thanks for your question on Health Care Magic. I can understand your concern. No need to worry for tuberculosis in your case. You are showing delayed reaction and it is suggestive of either vaccination or immunity against tuberculosis. You had montoux test (MT). In which tubercular antigens are injected in the skin. If reaction develops within 48-72 hours than possibility of TB infection is more. After 48-72 hours, if reaction occur than this suggests previous vaccination with BCG or immunity against tuberculosis. So in your case, you developed skin reaction after 6 days, so you are not having infection. So no need to worry for tuberculosis in your case. Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks.