Testing Centers

We are dedicated to helping you identify foods that may cause your Irritable Bowel Syndrome (IBS) or IBS-like symptoms. Our groundbreaking clinical research studies are proving to be a major advance in the understanding of a cause for IBS. If you have IBS or symptoms suggestive of IBS (see About IBS page), you may benefit from this testing. Simply put, food patch tests applied to and left on the skin for 48 hours are used to identify foods that cause a small allergic reaction where they are applied on the skin. This same allergic reaction likely is occurring in the intestine when the food is eaten, causing inflammation, which then disturbs how the intestine normally works and results in the symptoms of IBS.

Testing is performed by Dr. Michael Stierstorfer at the location listed below. As of July 1, 2019, testing is now available by prescription for use by other providers. See www.IBS-80.com for a listing of providers who offer IBS-80 patch testing.

IBS Food Allergy Testing Location

North Wales, PA

East Penn Dermatology, PC

311 N. Sumneytown Pike, Suite 2A
North Wales, PA 19454
(215) 557-7430


For general questions, contact us at info@IBSfoodallergy.com.