@Scott Adams I would say it means , no it is not verified gluten free. I am extremely sensitive and I also have OCD. So that answer is entirely too vague for me. However , if it suits others then I am happy for those individuals 

Have you considered eating plenty of gluten from now until your capsule endoscopy? If you truly have celiac disease that would increase the chances of damage being seen.

I just want to reinforce what Scott said and that is we have tended to think in these neat little black and white categories of it's either celiac or NCGS when in reality it may not be quite that neat. There's just a lot we don't know and the immune system is very complex. I often wonder if I had been gluten free as a child if I would have avoided developing celiac disease as an adult. I think there is also this misconception that if you have NCGS, gluten is not harmful, it just creates discomfort and inconvenience.

I am actually in the middle of this article currently already!   Thank you.  This website is extraordinarily helpful.

This article has some detailed information on how to be 100% gluten-free, so it may be helpful (be sure to also read the comments section.):