Volume 13 - Issue 3 - March 2005

T he thin-layer rapid use epicutaneous (T.R.U.E.) Test of 23 common allergens is a valuable, first-line screening tool used by many dermatologists. Although the test focuses on common allergens, frequent questions have arisen from colleagues and patients as to where exactly a specific allergen is derived or what products should be avoided by patients who are allergic to that allergen. With this in mind, this column was developed to provide more educational information about the T.R.U.E. Test allergens. A rich, interesting history accompanies each of the 23 allergens, and understanding these h