Medical Definition of Tuberculin. Tuberculin: A protein extracted from Mycobacterium tuberculosis that is used in a skin test to determine if a person has been exposed to tuberculosis. The tuberculin preparation in most common use today is purified protein derivative (PPD) tuberculin.
Tuberculin, also known as purified protein derivative, is a combination of proteins that are used in the diagnosis of tuberculosis. This use is referred to as the tuberculin skin test and is recommended only for those at high risk. Injection is done into the skin.
- shortness of breath,
- generalized rash
- lightheadedness or fainting.