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I need to know what my chances are of having tb! am I positive or what if red area?
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Dr. Alfredo Garcia
Pediatrics
In brief: PPD
The hardness (induration) of the reaction to the test is the basis for determining a positive test.
Any erythema visible really has no significance.

In brief: PPD
The hardness (induration) of the reaction to the test is the basis for determining a positive test.
Any erythema visible really has no significance.
Dr. Alfredo Garcia
Dr. Alfredo Garcia
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