Tuberculin Skin Test
How It Is Done
For a tuberculin skin test, you sit down and turn the inner side of your forearm up. The skin where the test is done is cleaned and allowed to dry. A small shot of the TB antigen (purified protein derivative, or PPD) is put under the top layer of skin. The fluid makes a little bump (wheal) under the skin. A circle may be drawn around the test area with a pen. See a picture of a person receiving a Reference Mantoux test Opens New Window Reference Opens New Window.
Do not cover the site with a bandage. You must see your doctor 2 to 3 days after the test to have the skin test checked.
|By:||Reference Healthwise Staff||Last Revised: Reference April 15, 2011|
|Medical Review:||Reference E. Gregory Thompson, MD - Internal Medicine
Reference R. Steven Tharratt, MD, MPVM, FACP, FCCP - Pulmonology, Critical Care Medicine, Medical Toxicology