Author: Tricia Thompson

Troubling Gluten Testing Data Released by Nima: But Hold the Phone

Yesterday the Nima Sensor team released testing data that has caused me a great deal of concern. They are reporting that 24% of packaged foods tested by consumers and uploaded to the Nima app have tested gluten detected. They are also reporting in a new graphic that it is very rare for the Nima to test positive for gluten at levels below 20 parts per million.

BUT this is not the complete story. The Nima is NOT a fully validated […]

Gluten Free Watchdog Updated Position Statement on Oats

Background: Two scientific publications from PepsiCo scientists provide us with the best data to date on the state of contamination of oats sold as gluten-free in the US (1, 2). Extensive testing by PepsiCo found 1 in every 57 servings tested (0.25 g sample taken from each 45 to 50 g ground serving) to contain gluten at levels at or above 20 parts per million using the R5 ELISA R7001 assay. The scientists point out that the number of […]

Lateral Flow Devices (Nima, Gluten Tox Home, EZ Gluten) to test food for gluten: Manufacturer & Consumer Use

This article was originally published in 2012 on glutenfreedietitian.com. Due to the marketing of the new consumer lateral flow device (LFD) NIMA there is a renewed interest in LFDs. An updated version of the article is republished here. If you are a manufacturer or consumer who currently uses or is thinking of using a LFD please take the time to read this article.

 Thank you to Thomas Grace of Bia Diagnostics, www.biadiagnostics.com and Adrian Rogers of Romer Labs https://www.romerlabs.com/ for sharing their […]

Grocery stores: please do not place gluten-free flour below wheat flour on store shelves

NOTE: A pdf of the letter is available at this link GFWDStoreLetter

Thank you to the Gluten Free Watchdog subscriber for sharing the attached photo.

Dear manager,

It has recently come to our attention at Gluten Free Watchdog, LLC that gluten-free foods are being placed below wheat-based foods on store shelves. This may not seem like much of an issue. However, when wheat-based food “leaks” as is often the case with bags of flour it is a health hazard. Wheat flour ends up […]

Using Nima to test mustard for gluten contamination

The video is embedded below. First a recap of Nima testing to date …

Sampling methodology for Nima: Gluten Free Watchdog has been assessing Nima’s sampling methodology. Users are advised to place a small sample of food inside a disposable capsule. A small sample is defined as “pea sized.”

In the opinion of Gluten Free Watchdog, this sampling method is not well suited for testing packaged foods that may have heterogeneous (unevenly distributed) gluten contamination or restaurant meals with spotty cross […]

Mystery Grain in Edison Grainery Lentils Tests “Low Gluten” Using Nima

This post is an update to the blog posted on December 13th entitled “General Product Warning: Check Your Lentils (including certified gluten-free lentils) for Foreign Grain” available at https://www.glutenfreewatchdog.org/news/general-product-warning-check-your-lentils-including-certified-gluten-free-lentils-for-foreign-grain/

Long story short: A consumer found a single errant grain in each of two bags of Edison Grainery certified gluten-free lentils. Photos of the grain were sent to Edison Grainery. The consumer was advised that the grain was likely wild oat, oat, or rice. Gluten Free Watchdog sent one of the […]

Quaker researchers publish a second study highlighting the difficulties associated with testing oats for gluten contamination

Note: This is one of two companion articles published today on oats. An updated position statement on oats from Gluten Free Watchdog will be published in the near future.

PepsiCo scientists recently published a second article in the scientific peer-reviewed literature on the difficulties associated with testing oats for gluten contamination. This article entitled “Kernel-based gluten contamination of gluten-free oatmeal complicates gluten assessment as it causes binary-like test outcomes” compliments their first article entitled, “Gluten-containing grains skew gluten assessment in […]

Controversy continues to swirl around oats & their suitability for a gluten-free diet

Note: This is one of two companion articles published today on oats. An updated position statement on oats from Gluten Free Watchdog will be published in the near future.

 Very long bottom line

“Do oats belong in a gluten-free diet?” This was the title of the first article of mine published in the peer-reviewed scientific literature. This was way back in 1997. Oats were controversial then and they are controversial now. There have been questions about: oat safety, oat avenin; different […]

Gluten levels in products NOT labeled gluten-free but appearing to be free of gluten ingredients

Testing data from Gluten Free Watchdog was recently published in the European Journal of Clinical Nutrition. The focus of the article is allergen advisory statements for wheat but the article also includes data on gluten levels of products not labeled gluten-free but appearing to be free of gluten ingredients. It was recently brought to my attention that these levels should be highlighted (thanks, Al!).

Summary findings for products NOT labeled gluten-free:

101 total products tested

87 products tested below 5 parts per million […]

©2013