Detecting TB early goes a long way toward avoiding some of the disease's worst outcomes and preventing its spread to others.

In high-income western countries, interferon-γ release assays (IGRAs) have largely replaced the classic tuberculin skin test for diagnosing latent tuberculosis ... with low-positive IGRA results ...

Researchers find that xylazine test strips, while useful harm reduction tools, have some significant limitations to be aware ...

Tuberculosis ... read the test results yourself," says Roess. When checked by a healthcare professional, "an induration on the skin of 15 millimeters or more is usually considered a positive ...