Gluten Free Watchdog no longer recommends GF Harvest as a source of purity protocol oats
Until further notice, Gluten Free Watchdog does not recommend GF Harvest as a source of purity protocol oats.
Gluten Free Watchdog recently analyzed five bags of oat products from GF Harvest. Testing using the sandwich R5 ELISA found gluten in quantifiable levels in both GF Harvest oat flour and GF Harvest organic rolled oats.
Back story: A subscriber to Gluten Free Watchdog reached out about GF Harvest oats due to test results posted to Facebook. The Nima Sensor detected gluten in multiple products tested by multiple users. As you may recall, Nima results are qualitative but not quantitative, either showing a smiling face (for no gluten found) or a gluten found result.
Generally speaking, Gluten Free Watchdog does not test products that test gluten-found using any lateral flow device unless multiple people are getting the same result OR the same person is getting the same result on multiple tests. Test results on GF Harvest oats warranted further investigation.
We had the two consumers send their opened bags to the Gluten Free Certification Organization (both bags had the Certified Gluten-Free mark from GFCO on the label). After testing, GFCO sent what remained of the product to Gluten Free Watchdog. We sent the opened bags as well as additional unopened bags to Bia Diagnostics for testing using the scientifically validated sandwich R5 ELISA.
Note regarding lateral flow devices such as the Nima Sensor and EZ Gluten: Unexpected results should always be confirmed using a fully validated ELISA. In the case of GF Harvest, the positive results using the Nima were confirmed by the R5 ELISA. In the case of Liquid I.V. electrolyte drink mix (see our AOAC International conference poster and abstract available at https://www.glutenfreewatchdog.org/news/the-need-for-a-standardized-sample-portion-when-testing-food-for-gluten-using-an-lfd-a-case-study/), the positive results found with the LFD were false positives.
All impacted parties have been notified about the test results. Please reach out to GF Harvest if you have questions about their oats. Please reach out to GFCO if you have questions about their certification.
If you believe a GF Harvest oat product made you sick, please contact an FDA Consumer Complaint Coordinator at https://www.fda.gov/safety/report-problem-fda/consumer-complaint-coordinators.
Thank you to the consumers who reached out to Gluten Free Watchdog.