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A member asked:
What does a positive tb test look like?
A doctor has provided 1 answer
Skin test: If you had a PPD skin test and you have no risk factors, a positive test is when after 48 to 72 hoursyou have swelling in the site and redness that measures more than 15 mm, it is considered a positive tb. Test.
Answered 7/7/2019
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