Everything comes down to processing, cannabis the bud as grown is not gluten, but you have to ask:
-was equipment and land used to grow and process the buds used to process wheat as well? (Farms can grow multiple crops and use the same machinery, contaminating the bud)
- if in a processed form like vape cartridge or oil, we're any additives or fillers...
I am Celiac for about a decade, done alot of research on this. Comes down to carrier oils and additives. Biggest offender: Vitamin E extract, used as an additive, but is often contaminated by gluten. The biggest thing is to look for vape brands that promise no filler or additives, and will be able to tell you about their process in detail. A flavorless vape...