Skin test for tuberculosis

Procedure Information

What is a Skin Test for Tuberculosis?

A skin test for tuberculosis is a procedure to check for an active tuberculosis infection in the body. It is also referred to as the tuberculin test, the mantoux test, or the PPD test.

Why Would I Get a Skin Test for Tuberculosis?

The skin test is usually done when there is risk of being exposed to tuberculosis bacteria or if there are symptoms of a tuberculosis infection. It can also be done as a routine exam, or as a way to review if a person has been infected or exposed to the tuberculosis in the past.

What Happens During a Skin Test for Tuberculosis?

During this procedure, a tiny amount of fluid that contains parts of the tuberculosis bacteria is injected in the skin of your arm. After 48-72 hours, a health care provider will review the spot to determine if a person has had exposure to the tuberculosis bacteria.

What to Expect After a Skin Test for Tuberculosis?

After the test is administered, the spot may be swollen and red. This is a normal reaction. If it is swollen and red, this means you have been exposed to the tuberculosis bacteria. A follow-up test may be recommended for further evaluation.

Conclusion

A Skin Test for Tuberculosis is a procedure used to check for an active tuberculosis infection or determine if a person has had prior exposure to the tuberculosis bacteria. The test is usually done when there is a risk of being exposed to the bacteria, or if there are symptoms of a tuberculosis infection. After the test is administered, results will take 48-72 hours to be determined. A follow-up test may be recommended for further evaluation.