I have reacted badly to nutiva shelled hemp seeds. I'm not aware I'm reactive to hemp, so maybe their seeds are contaminated. I notice they explicitly do not state their hemp seeds are gluten free on their web site, though they state their chia seeds and coconut products are gluten free. I also notice in the email above they do not state their hemp seeds...
The answer to your main question is No, you don't have to have a biopsy for diagnosis, but it'll probably be requested by your gastroenterologist. Most doctors will refer you to a gastroenterologist. Look for an internist or other doctor who specializes in digestive disorders and nutrition issues. My biopsy was negative after 30 days of eating guten. My...