A friend is feeling much better on the FODMAP diet. She's been told that she needs aBreath Hydrogen Test
She's also been told that she needs to eat gluten for 6 weeks before taking this test. She doesn't have any particular reason to test for celiac based on this:
So can she take the breath test without eating gluten (she knows she reacts to all fructans, like onions, artichokes, etc.) and if she fails the breath test, then decide if she needs to formally challenge gluten, the protein?
Any input appreciated.