Understanding Lab Tests for Latent TB Infection

Latent tuberculosis (TB) infection occurs when TB bacteria remain dormant in the body without causing symptoms or illness. Unlike active TB disease, people with latent TB infection feel well, show no symptoms, and cannot spread the infection to others. However, without proper treatment, latent TB can progress to active TB disease, making early detection crucial.

Recommended Test

Why Blood Testing is Essential for Latent TB Detection

Since latent TB infection produces no symptoms, specialized blood tests are the primary method for identification. These tests detect the body's immune response to TB bacteria, allowing healthcare providers to identify individuals who need preventive treatment to avoid progression to active TB disease.

Who Should Consider Testing

Testing for latent TB infection is particularly important for individuals at higher risk, including those who have been in close contact with someone with active TB, people from countries with high TB rates, healthcare workers, and individuals with compromised immune systems. Early detection allows for preventive treatment that can significantly reduce the risk of developing active TB disease.

Important Considerations

The information here is for educational purposes only and is not a substitute for professional medical advice. Always consult with a healthcare provider for diagnosis and treatment recommendations.

References

• https://www.cdc.gov/tb/topic/testing/default.htm
• https://www.mayoclinic.org/diseases-conditions/tuberculosis/diagnosis-treatment/drc-20351256
• https://medlineplus.gov/tuberculosis.html