As of February 15, 2012 Gluten Free Watchdog, LLC (www.glutenfreewatchdog.org) has tested 150 packages of labeled gluten-free food (representing 50 different products). Each sample was tested in duplicate for a total of 300 extractions. Of the 300 extractions, 268 or 89% tested < 5 ppm gluten; 15 extractions or 5% tested between 5 and < 20 ppm gluten (range 6 to 18 ppm); 17 extractions or 6% tested > 20 ppm gluten (range 26 to well over 100 ppm gluten).
Testing of Gluten-Free Foods: Summary of Findings