Tuberculin tine test
Alternate Names : TB tine
Normal Values
If you have a negative test result, the area may be a little red, but it will not be swollen and firm like a mosquito bite. This means you have not been infected with the bacteria that cause tuberculosis.
What do Abnormal Results Mean?
If you have been infected with tuberculosis, the area may become red and swell like a mosquito bite in 48 - 72 hours. This is considered a positive test result. It means your body's immune system detected the substance injected under your skin.
A positive TB tine test does not mean that you have active tuberculosis. It only means that you have been exposed and infected at some point in the past. A chest x-ray may be taken to determine whether you have active tuberculosis. If you have a positive TB tine test, you should also have a TB skin test.
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