05
Feb
2026
22
Jan
2026
A silly thing is happening with the relaunch of the Nima Sensor
A silly thing is happening with the relaunch of the Nima Sensor. The fact that Gluten Free Watchdog sends samples to the lab Bia Diagnostics for testing using the scientifically validated R5 ELISA is seemingly being used as a talking point to help confirm the validity of the sensor. From the Nima Now website: “That performance was validated by BIA Diagnostics, a globally recognized allergen-testing laboratory whose work is trusted by the celiac community and organizations such as Gluten Free Watchdog.” “For the...
06
Sep
2023
When the NIMA Partners gluten sensor result appears at odds with the visual reading of the LFD test strip
September 6, 2023 In the experimental work undertaken for our study, Consumer-Led Investigation into Potential Issues That Arise When Testing Dairy Matrixes for Gluten with the NIMA Sensor* we observed a possible disconnect between the result reported by the NIMA sensor and an interpretation of the LFD strip result when assessed by eye (e.g., regardless of sensor reading--smile, gluten found, no test result--the three LFD test strips in the photo look very similar). For more information, please see the study link...
25
Aug
2023
Testing dairy foods for gluten using a Nima sensor? Familiarize yourself with the potential issues
For immediate release August 25, 2023: Consumer-Led Investigation into Potential Issues That Arise When Testing Dairy Matrixes for Gluten with the NIMA Sensor published in the Journal of AOAC International by Tricia Thompson, Adrian Rogers, and Johnna Perry. To read the abstract and for a link to the full free text of this article (click on the pdf icon) please see https://academic.oup.com/jaoac/advance-article/doi/10.1093/jaoacint/qsad092/7238205?login=false. Highlights Slight variations in weight and volume of test materials can result in false positive results when testing dairy matrixes (such...
02
Feb
2023
Brief public summary of Gluten Free Watchdog’s Special Report on Cream Cheese & Nima Sensor Test Results
Please also see the full published article: Tricia Thompson, Adrian Rogers, Johnna Perry. Consumer-Led Investigation into Potential Issues That Arise When Testing Dairy Matrixes for Gluten With the NIMA Sensor. Journal of AOAC INTERNATIONAL, 2023; qsad092 https://doi.org/10.1093/jaoacint/qsad092 .......... Authors of the special report: Tricia Thompson, MS, RD, Founder, Gluten Free Watchdog, LLC; Adrian Rogers, Development Manager, BioCheck, UK; Johnna Perry, Gluten Free Watchdog Consumer Subscriber Gluten Free Watchdog recently tested weighed samples of cream cheese, cream cheese spread, yogurt, and soft cheese for gluten using a...
08
Jul
2020
Dietitian Experiences Using a Novel Portable Personal Testing Gadget For Gluten
This article was published in Medical Nutrition Matters (Winter 2019 Volume 38 No. 3), a publication of Dietitians in Medical Nutrition Therapy--a practice group of the Academy of Nutrition and Dietetics. https://www.glutenfreewatchdog.org/news/wp-content/uploads/2020/07/NIMADietitian-Experiences-Using-a-Novel-Portable-Personal-Testing-Gadget-For-Gluten
21
Mar
2019
Morning musings about testing food for gluten & the Nima Sensor
Please also see: Tricia Thompson, Adrian Rogers, Johnna Perry. Consumer-Led Investigation into Potential Issues That Arise When Testing Dairy Matrixes for Gluten With the NIMA Sensor. Journal of AOAC INTERNATIONAL, 2023; qsad092 https://doi.org/10.1093/jaoacint/qsad092 .......... The following is paragraph form of a tweet thread posted by @GFWatchdog to Twitter on March 21, 2019. A few musings this morning about testing food for gluten & the Nima Sensor. Background, I have been commissioning testing of gluten-free food for about 15 years. Does this make me an expert? No....
09
Oct
2018
Please do not panic: The research abstract on the Nima Sensor and gluten-free restaurant meals presented at the ACG annual meeting is misleading
Yesterday evening I was just about to close up shop when three messages arrived almost simultaneously asking about a research abstract presented at the American College of Gastroenterology annual meeting entitled “Gluten Contamination of Restaurant Food: Analysis of Crowd-Sourced Data.” According to the abstract, study authors, including physicians from the Celiac Disease Center at Columbia University “analyzed data from a portable gluten detection device (Nima), collected across the USA during an 18-month period by users (n = 804) who opted...
17
Sep
2018
When an individual is maligned because his scientific opinion is at odds with the commercial messaging surrounding a food-testing gadget we have a problem
Background: As many of you know, Gluten Free Watchdog has been independently testing, assessing, and writing about the Nima Sensor for gluten for a couple of years. Third party testing data was recently released. As a result, we provided an update to our position statement on the testing gadget* (we are not able to recommend it). In our post we included the following statement from Adrian Rogers, Senior Research Scientist at Romer Labs about the Nima Sensor and the third party...
06
Sep
2018