Tuberculin
Tuberculin
Tuberculin (pronounced: too-ber-kyoo-lin) is a purified protein derivative (PPD) used in diagnosing Tuberculosis, a serious infectious disease that primarily affects the lungs.
Etymology
The term "Tuberculin" is derived from the word "Tuberculosis" and the suffix "-in" which is used in forming names of substances.
Definition
Tuberculin is a sterile liquid containing proteins extracted from the Mycobacterium tuberculosis bacteria. It is used in the Tuberculin skin test (TST), also known as the Mantoux test, to check for a tuberculosis infection.
Usage
In the Tuberculin skin test, a small amount of Tuberculin is injected under the skin in the lower part of the arm. If the person is infected with tuberculosis, a raised lump will develop at the site of the injection within 48 to 72 hours.
Related Terms
- Tuberculosis: An infectious disease that primarily affects the lungs but can also affect other parts of the body.
- Mycobacterium tuberculosis: The bacterium that causes tuberculosis.
- Tuberculin skin test: A test used to determine if a person has been infected with tuberculosis.
- Mantoux test: Another name for the Tuberculin skin test.
External links
- Medical encyclopedia article on Tuberculin
- Wikipedia's article - Tuberculin
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