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Is it possible to have TB after a negative PPD test?

1 doctor weighed in
Dr. Alfredo Garcia
Pediatrics

In brief: PPD testing

The answer is yes.
A previous exposure to TB (travel to a country where TB is endemic) can result with a negative PPD test before the germs produce disease. Have yourself retested in 8 to 10 weeks if still suspicious or opt for the blood test, quantiferon.

In brief: PPD testing

The answer is yes.
A previous exposure to TB (travel to a country where TB is endemic) can result with a negative PPD test before the germs produce disease. Have yourself retested in 8 to 10 weeks if still suspicious or opt for the blood test, quantiferon.
Dr. Alfredo Garcia
Dr. Alfredo Garcia
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