Nima Sensor

Adrian Rogers Discusses Personal Gluten & Allergen Detection Devices such as Nima

November 23, 2017

Adrian Rogers, Senior Research Scientist at Romer Labs, recently spoke at Food Matters Live in London about consumer food testing devices for gluten and allergens (e.g., Nima Sensor). He generously gave permission for his slides and the audio from the live presentation to be posted on Gluten Free Watchdog. This is an exceedingly important presentation to listen to for everyone interested in learning about these devices.

For the best learning experience, please view the slides and listen to […]

Gluten-Free Quaker Oats & Testing with the Nima Sensor, R5 ELISA, & G12 ELISA

November 6, 2017

Please read this entire document very carefully. The information is presented in bullet point format to hopefully make complicated information a bit easier to understand.


A consumer tested a carton of Quaker Oats labeled gluten-free with the Nima Sensor consumer-testing device. Two samples—one cooked and one raw were tested. Both results were “gluten found”.
The consumer sent all remaining product in the original container to Gluten Free Watchdog.
Gluten Free Watchdog sent the product to an […]

Nima Update: Limit of Detection

Post date: July 12, 2017

The following email was sent to subscribers to Gluten Free Watchdog this morning (July 12, 2017):

Dear Gluten Free Watchdog community,

This email is primarily for those of you who test products using Nima or are interested in this device.

We are receiving increasing requests both from inside and outside the GFWD community to test products that have detected gluten using Nima. As you know we have tested a few of these products when the integrity of the […]

Consumers & Manufacturers: What you must know about gluten test results using the Nima Sensor

In Honor of Celiac Disease Awareness Month, Gluten Free Watchdog is writing a series of articles (the goal is one per day during the month of May) related to the gluten-free diet–currently the ONLY treatment for celiac disease.

Post (#30)…

At Gluten Free Watchdog we have been testing a wide variety of products with the Nima Sensor. It is very difficult to put results into the proper context due to the lack of a published validation report on this device.

Four emerging themes […]

Gluten Free Watchdog Position Statement on Consumer Use of the Nima Sensor to Test Food for Gluten

Bottom line:

At Gluten Free Watchdog we have been testing a wide variety of products with the Nima Sensor. It is very difficult to put the results of testing completed to date into proper context due to the lack of a published validation report on this device. One goal of our testing is to provide recommendations for consumer use of the Nima Sensor. This is proving to be impossible at this time. In the opinion of Gluten Free Watchdog the […]

What’s to blame for possible false positive “low gluten” test results using the Nima?

Bottom line: Gluten Free Watchdog has personally tested many products using the Nima Sensor. One of the issues slowly emerging is what appear to be false positives (e.g., defined by Gluten Free Watchdog as products testing “low gluten” when tested with the Nima but less than 1 ppm when tested with the R5 ELISA) when testing certain types of samples. The gluten-free foods (and products free of gluten-containing ingredients) testing “low gluten” using the Nima have similar ingredients and […]

R5 ELISA Test Results for Gluten-Containing Products Testing “Low Gluten” & “High Gluten” Using the Nima Sensor

Bottom Line: Based on testing done to date by Gluten Free Watchdog, products testing “low gluten” using Nima tested from below the limit of detection of 1 ppm gluten up to 18,963 ppm gluten using the R5 ELISA. Barley flour also tested low gluten. Based on these results it is difficult to assess the meaning or understand the usefulness of a “low gluten” Nima reading.

Why did we test gluten-containing products: We tested a variety of gluten-containing products out of […]

Products testing low gluten using the Nima Sensor test less than 5 ppm using the R5 ELISA: False Positives?

Bottom Line: In some cases packaged food labeled gluten-free (or appearing to be free of gluten containing ingredients) testing “low gluten” using the Nima may test below the lower limit of quantification of 5 parts per million of gluten (and below the limit of detection of 1 ppm) using the fully validated R5 ELISA Mendez Method (Ridascreen Gliadin R7001).

Comparison Testing: Results comparing the Nima to the R5 ELISA included in this summary report are for the same product. In […]

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 […]