On August 5, 2013, the US FDA released their final ruling on the definition of the term “gluten-free” in food labeling. This regulation requires that foods labeled gluten-free must contain less than 20 ppm of gluten.
The FDA further ruled that any scientifically validated method for the detection of gluten may be used to verify a manufacturer’s gluten-free claim. Both the ELISA Technologies EZ Gluten assay and AllerTek ELISA have been validated through the AOAC Performance Tested Methods program to meet this requirement.
The full text of the final ruling may be found here: FDA Final Gluten-Free Ruling