The Tuberculosis (TB) Test is used to detect an active Mycobacterium tuberculosis infection, which primarily affects the lungs but can easily spread to other parts of the body including Brain, bone, lymphnodes, abdomen, bladder. TB tests are important for diagnosing latent and active TB in individuals at high risk.
Indications for TB Test:
● Cough with blood: To diagnose TB in individuals with a persistent cough that may produce blood.
● Close contact with TB patients: For individuals exposed to TB in high-risk settings like healthcare facilities or households.
● Positive TB skin test: To confirm whether a positive skin test indicates an active or latent infection.
● High-risk groups: Individuals with weakened immune systems (e.g., HIV-positive patients or those on immunosuppressive medications) may need TB testing.
How TB Test Works:
● TB can be diagnosed using various tests, such as:
● TB skin test (Mantoux test): A small amount of TB protein is injected under the skin, and the site is checked for a reaction.
● Chest X-ray: To look for signs of lung damage caused by active TB.
● Sputum smear microscopy: To detect TB bacteria in the sputum (phlegm) under a microscope.
● TB blood tests (QuantiFERON): A blood test to assess the immune response to TB.
Normal Range:
● Negative skin test: No reaction to the injection, indicating no active or latent TB infection.
● Normal chest X-ray: No evidence of active TB lesions or lung damage.
● Negative sputum test: No bacteria detected.
Abnormal Test Significance:
● Positive skin test: A positive skin test can predict the presence of a latent TB, requiring further tests to confirm if the infection is active.
● Abnormal chest X-ray: Suggests an active pulmonary TB but can be subjective.
● Positive sputum test: It is indicative of an active pulmonary TB infection..
Management Based on Results:
● For latent TB: Treatment typically involves a 6–9 month regimen of antibiotics.
● For active TB: A combination of antibiotics is used, and treatment may last for 6–12 months.
Price in India:
Approx. ₹500 – ₹3,000 for a TB test, depending on the type (skin test, blood test, X-ray).
Frequently Asked Questions
Can TB be cured?
Yes, TB can be cured with a full course of anti tubercular drugs, ranging from 6 months to even 2 years, especially if diagnosed early.
How is latent TB different from active TB?
Latent TB does not cause symptoms or spread to others, while active TB causes symptoms and can be contagious.
Disclaimer: TB testing is essential for early diagnosis and treatment. It should be done in conjunction with clinical evaluation.
How HealthPil Can Help:
At HealthPil, we offer access to pulmonologists and infectious disease specialists who can interpret your TB test results and provide treatment recommendations.