It's Cyrex:
Cyrex Tests & Arrays
See array 4. With them you'd probably do array 3 first. And then -- if and only if you tested +ve on array 3, would you need to splash out for array 4.
The suggested explanation is the one I heard. It sound plausible. They say it's not uncommon among people who are gluten sensitive.
But how anyone would check a Cyrex result, being as they seem to be the only people doing some of these tests ... well, you couldn't.
But it's the same with any lab test up to a point. Paul Chek days he's often drawn two blood or urine samples and sent them off to a lab under different names ... and got back different results.
Really, we're all groping in the dark. People do as they think, test if they can afford it, and if they do test hope the results are valid.
I suppose "eliminate then challenge" would be another way to try to find out.
As I understand it, some people think that if you go through a really good gut-repair protocol, then you may be able to handle a food you couldn't before. Others think that if you once start making antibodies to body tissue of one sort or another on account of a food allergy, then that food's off the menu for ever. But further, if (again) I'm understanding right,
no-one actually knows.