How do you know if you have gluten sensitivity without going gluten free for awhile to see what happens?

There are blood tests... you have to be eating the gluten when you have them done. But some gluten intolerant people test normal with them anyway.

Going off gluten is a good way to see what happens.

I recommend 3 months as the minimum to see if there are any changes.

Thanks everyone. I'm about six weeks gluten free. I'll update in a few months.

Muireann,
Have you noticed any change in your pain level yet? I'm still having trouble reading labels and figuring out what's safe to eat, so I've been cooking from scratch. My husband and I ate better last week than we have in a long time!

I notice I'm in worse pain when I cheat on gluten but there could be other factors. This is a great cooking site with lots of inspiration :

http://deliciouslyella.com/

Have been tested for gluten,(celiacs)

I was tested years ago, negative. However, I am persuaded by the arguments of dr perlmutter in The Grain Brain, that gluten can be toxic to the cns even in the absence of obvious gut damage. Also, I'm from the west of Ireland which has one of the highest rates of celiac in the world and lots of sub clinical sensitivity. And I have Parkinson's disease which might be due to leaky gut and b12 def exacerbated by mthfr snp.