How Does a TB Skin Test Work?

What does a positive TB skin test result indicate?

1. Exposure to TB bacteria

2. Active TB disease

3. Latent TB infection

Answer:

A positive TB skin test indicates exposure to TB bacteria and the development of antibodies, suggesting a latent TB infection rather than an active disease.

When you undergo a TB skin test and receive a positive result, it means that you have been exposed to the tuberculosis bacteria at some point in time. Your immune system has fought off the bacteria by developing antibodies, leading to a positive test result. This scenario usually points towards a latent TB infection rather than an active disease.

Latent TB infection occurs when the TB bacteria are present in the body but are in an inactive state, causing no symptoms. However, it is important to note that latent TB infection can progress to active TB disease if left untreated.

Therefore, if you have a positive TB skin test, it is crucial to seek medical evaluation and potentially treatment to prevent the development of active TB disease. Regular monitoring and proper management can help control and eradicate the infection.