MetALLS Patch Skin Testing Make an Appointment Patient Education Find a Doctor Download Patient Education Patch skin testing is a method of placing small amounts of different substances on the skin for 2 days, and examining the skin for a reaction for several days after. A positive reaction is red, raised, and often itchy. This method helps to diagnose a metal or cement allergy, and will help your doctor identify the best treatment for you. Download PDF: MetALLS Patch Skin Testing Download PDF: MetALLS Patch Skin Testing View more information on Metals Allergy Testing National Jewish Health authors free downloadable patient education materials to provide you and your family the information and tools to help manage your disease. They include Understanding Booklets, Med Facts, Test Facts, Medication handouts and more. Search Free Education Materials