What does a Positive Ppd Look Like?

The PPD test is a test for tuberculosis that is administered using a small needle just under the skin. A positive reaction would appear as a red bumpy or swollen area near the site of the injection.

A positive PPD test for tuberculosis depends on the health of the individual. In a normal, healthy person a positive PPD test would be 15 mm or more of hard swelling. If there are other medical conditions then it may be positive with a smaller diameter.

You can find more information here: nlm.nih.gov/medlineplus/ency/article/003....

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