SEEDSSesame seed is currently regulated for labeling purposes as an allergen in Europe, Canada, New Zealand and Australia. In 2018, the US FDA announced it is "advancing a new effort for the consideration of labeling for sesame to help protect people who have sesame allergies." BioFront's MonoTrace sesame kit is highly specific, demonstrating no cross-reactivity to trees nuts and peanuts.
Buckwheat is a potent food allergen and, though not considered one of the 'Big 8' in the US, it is a common food allergen in Asia.
Mustard is regulated as an allergen in Europe and Canada.