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2. Diagnosis of tuberculosis - Wikipedia

   en.wikipedia.org/wiki/Diagnosis_of_tuberculosis

   A complete medical evaluation for tuberculosis (TB) must include a medical history, a physical examination, a chest X-ray and microbiological examination (of sputum or some other appropriate sample). It may also include a tuberculin skin test, other scans and X-rays, surgical biopsy.

3. Mantoux test - Wikipedia

   en.wikipedia.org/wiki/Mantoux_test

   In the Mantoux test, a standard dose of 5 tuberculin units (TU – 0.1 ml), according to the CDC, [8] or 2 TU of Statens Serum Institute (SSI) tuberculin RT23 in 0.1 ml solution, according to the National Health Service, [9] is injected intradermally (between the layers of dermis) on the flexor surface of the left forearm, mid-way between elbow ...

4. Tuberculosis - Wikipedia

   en.wikipedia.org/wiki/Tuberculosis

   A Mantoux tuberculin skin test. The Mantoux tuberculin skin test is often used to screen people at high risk for TB. [100] Those who have been previously immunized with the Bacille Calmette-Guerin vaccine may have a false-positive test result. [107] The test may be falsely negative in those with sarcoidosis, Hodgkin's lymphoma, malnutrition ...

5. Heaf test - Wikipedia

   en.wikipedia.org/wiki/Heaf_test

   The equivalent Mantoux test positive levels done with 10 TU (0.1 mL 100 TU/mL, 1:1000) are 0–4 mm induration (Heaf 0-1) 5–14 mm induration (Heaf 2) >15 mm induration (Heaf 3-4) The Mantoux test is preferred in the United States for the diagnosis of tuberculosis; multiple puncture tests, such as the Heaf test and Tine test, are not recommended.

6. GeneXpert MTB/RIF - Wikipedia

   en.wikipedia.org/wiki/GeneXpert_MTB/RIF

   In a clinical study conducted the sensitivity of the MTB/RIF test on just 1 sputum sample was 92.2% for culture-positive TB; 98.2% for smear+ and culture-positive cases; and 72.5% for smear-negative, culture-positive cases, with a specificity of 99.2%. Sensitivity and higher specificity were slightly higher when 3 samples were tested. [10]

7. T-SPOT.TB - Wikipedia

   en.wikipedia.org/wiki/T-SPOT.TB

   T-SPOT.TB counts the number of antimycobacterial effector T cells, white blood cells that produce interferon-gamma, in a sample of blood.This gives an overall measurement of the host immune response against mycobacteria, which can reveal the presence of infection with Mycobacterium tuberculosis, the causative agent of tuberculosis (TB).

8. Quantiferon - Wikipedia

   en.wikipedia.org/wiki/QuantiFERON

   The Quantiferon-TB Gold test (QFT-G) is a whole-blood test for use as an aid in diagnosing Mycobacterium tuberculosis infection, including latent tuberculosis infection (LTBI) and tuberculosis (TB) disease. [15] This test was approved by the U.S. Food and Drug Administration (FDA) in 2005. Blood samples are mixed with antigens (substances that ...

9. Ziehl–Neelsen stain - Wikipedia

   en.wikipedia.org/wiki/Ziehl–Neelsen_stain

   Mycobacterium tuberculosis that causes tuberculosis (TB) in humans is an airborne bacterium that typically infects the human lungs. [6] [7] Testing for TB includes blood testing, skin tests, and chest X-rays. [8] When looking at the smears for TB, it is stained using an acid-fast stain.