The PPD skin test is a method used to diagnose silent (latent) tuberculosis (TB) infection. PPD stands for purified protein derivative.
Purified protein derivative standard; TB skin test; Tuberculin skin test; Mantoux test
How the Test is Performed
You will need 2 visits to your doctor's office for this test.
At the first visit, the health care provider will clean an area of your skin, usually the inside of your forearm. You will get a small shot (injection) that contains PPD. The needle is gently placed under the top layer of skin, causing a bump (welt) to form. This bump usually goes away in a few hours as the material is absorbed.
After 48 to 72 hours, you must return to your provider's office. Your provider will check the area to see if you have had a strong reaction to the test.