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A member asked:
What does a + tb test look like?
A doctor has provided 1 answer
Positive PPD test: A positive TB test should look like hard, raised bump with size >5to15 mm depending of the risk category you are in. It should be read in between 48 to72 hours. It is the hardness and not redness which is read. Thanks.
Answered 6/10/2014
4.9k views
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