Certainly. Oats must be certified GF if they will consumed by someone with Celiac. My question to twisted and Sam is simply, if it is true that gluten = chametz, than certified GF Oats would never be chametz since the gluten protein is naturally absent in Oats. It is only because Oats are grown in close proximity to other grains such as wheat that contain Gluten that the certification is necessary. In fact the FDA last summer standardized labeling in the US for manufacturers claims of GF.
From FDA website:
What does gluten cross-contact mean in the context of the final rule?