PPD Cross Reactivity

Steve Grenard grenard at herpmed.com
Sat Dec 30 00:29:51 EST 1995

I am interested in knowing if a patient is mistakenly given two PPD tests,
perhaps a day or so apart or even a few hours apart, if there can be cross-reactivity
causing one or both to be a false positive?

Please reply by e-mail to: 

grenard at herpmed.com

Thank you.

Steve Grenard

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