The brand takes Food and Allergy safety seriously. They are transparent with their customers, and that's why they haven't claimed their products are produced in a 100% gluten-free facility. They test all their gluten-free products before making them available to their customers.
Some of their products, such as Anthonys Goods Vital Wheat Gluten, contain gluten. This product is derived from wheat protein, and it comes in powder form. It's made from hydrated wheat flour to activate the gluten, which is processed, dried, and then grounded back into a powder.