Tuberculin Overview

Encyclopedia: Tuberculin

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Tuberculin is the name given to extracts of Mycobacterium tuberculosis, M. Bovis, or M. avium, used in skin testing in animals and humans to identify a tuberculosis infection. Several types of tuberculin have been used for this, of which purified protein derivative is the most important. PPD is a poorly defined complex antigen mixture. Tests based upon PPD are relatively unspecific since many of it's proteins are found in different...

Yahoo! Answers

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How big is the lump in a positive tuberculin skin test?
Is it visible? Like a mosquito bite or what?

After 3 days, there should not be any lump. If there is a lump, it is a possitive reading. Follow up with a chest xray.

Asked by radioflyer - 18 months ago


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