There are several different tests and we do have some family members with neurological issues who were diagnosed with problems with gluten (one distant relative was thought to have a psychiatric disorder for years but actually had Celiac). Another had what used to be termed as the dropsies. I read about a test the other day about gliadorpdin and casomorphin and wondered if that type of leaky gut with the casein and gliadin affecting the brain would also possibly cause other neurological issues as well? What I read was here, but it didn't say anything about that -- I guess that is my long way of asking if the test with blood or enterolab came out negative would it be worth testing with great plains lab? Would that type of positive effect possibly affect periphery?????