Redness alone at the skin test site usually means you have not been infected with TB bacteria. A firm red bump may mean you have been infected with TB bacteria at some time. The size of the firm bump (not the red area) is measured 2 to 3 days after the test to determine the result.
A TB test is considered positive if there is a bump or swelling at the injection site after 48-72 hours. This reaction indicates exposure to TB bacteria, but it does not confirm active infection. Further testing, such as a chest x-ray and sputum analysis, is needed for diagnosis.
Screening Pulmonary TB V74.1 TB Test Reaction 795.5 Exposure to TB v01.1
It is contraindicated to have a second TB test after a previous positive test result.
Yes a school can require you to get a TB test, so it doesn't spread.
In people who have not been exposed to TB, there will be little or no swelling at the test site after 48-72 hours. This is a negative test result.
The Mentoux Test is a skin test the screens for TB.
No, weed treats TB.
The skin test takes just a minute to administer.
The medical term meaning Tb skin test is Mantoux. It's a term that refers to a skin test to check for tuburculosis.
Since 2001 there has been an approved blood test for TB that has advantages over the skin test, and is recommended by the US Center for Disease Control. Follow the links below for details. It does not require a repeat visit (if negative), and is more reliable in some cases, such as people who have had a TB immunization or multiple TB skin tests. It is called the QuantiFERON®-TB Gold test. Like the skin test, it only tells that a person has been infected with TB germs. It does not tell whether or not the person has progressed to TB disease. Other tests, such as a chest x-ray and a sample of sputum, are needed to see whether the person has TB disease. The test mentioned above tests for TB by detecting the immune response to TB. If a patient is severely ill, there may be TB bacilli in the blood, and a blood culture can be used.
A zero result means you tested negative for TB.