At what level below 20 ppm do you detect gluten? Stacy Boise July 01, 2017 08:09 Updated Follow Based on internal testing, Nima has detected gluten at levels as low as 5 ppm. If Nima detects gluten at any level, the "Gluten Found" message will appear on the device. Visit the Nima store. Related articles What’s the difference between gluten levels? How frequently will you detect gluten below 20 ppm? Mini Video: Intensely Colored Foods What’s Nima's level of detection? What happened to my low / high results in the app? Comments 0 comments Please sign in to leave a comment.