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

A purified protein derivative (PPD) skin test is a test that determines if you ... A bump or small welt will form, which usually goes away in a few hours. After 48 to 72 hours, you must return ...

If you have experienced tuberculosis ... skin test (TST). During the first visit for this test, you receive the injection. Healthcare professionals then schedule another visit for you around 2 ...

The TB skin test has two parts. In the first, a doctor will inject someone with a small amount of a sterile solution, containing tuberculin. Tuberculin is a fraction of purified protein derived ...

a doctor or healthcare professional will examine the skin for a reaction. There is usually a period of 2 to 3 days between the two appointments. A healthcare team may suggest a blood test for TB.