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A member asked:
How quickly will you know if you have a positive tb test?
A doctor has provided 1 answer
48-72 hours: Tb test is meant to be interpreted in 48-72 hours after being administered on the forearm. Make sure that the induration (not redness) is measured in that time frame & results documented by a health care provider. Further testing may be determined based on your results from the TB test.
Answered 6/10/2014
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