Yes, our supplier uses Purity Protocol. Click for detail from our supplier, Avena Foods, on how they practice Purity Protocol when growing, milling and transporting the oats used in our products. Purity Protocol is a farm-to-plate method of ensuring that oats are gluten-free and have met requirements for seed stock purity, as well as criteria for growing, harvesting, transport, storage, processing, and manufacturing (gfco.org).