Organizations such as the USP (United States Pharmacopeia) or Consumer Labs offer third-party verification services to ensure supplements contain what is stated on the label and are free from contaminants. Most of our manufacturers are NSF Registered facilities. For a full list of these facilities: Bio Nutraceuticals Inc., Nutribiotech USA, ProTec Laboratory and Vitality Works. All PURE products are manufactured in accordance with current FDA good manufacturing practices (CGMPs) published in 21 CFR (code of federal regulations) 111. We also perform our own product testing and we work diligently to provide the highest quality products possible.