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A member asked:
Why would someone born in india get a false positive on a ppd tb test?
A doctor has provided 1 answer
Easy: What determines a false-positive test? Either not measuring induration, or that it was due to prior bcg, which seldom lasts more than 5 yrs. If someone has a negative PPD it means either that they do not have a focus of inactive tuberculosis or that they are anergic (incapable of reacting due to deficiency in immune mechanisms).
Answered 6/10/2014
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Related Questions
A member asked:
Might it be possible that a a person have an allergic reaction to the PPD test for tb?
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I used a hair dye that apparently has PPD in it...and I keep seeing online things about PPD and Tuberculosis? Does this mean I'm going to get TB?
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My wife is pregnant. Is it safe for her to have a PPD test for tb?
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