[anonymously]

What type of allergies? If the dog has environmental allergies, the food would not make a difference, unless the dog has a sensitive stomach.

Have you checked the search engine here? /forums/search/allergies/

Once my dogs environmental allergies were under control, she now tolerates a variety of foods, she has no food allergies. In fact, I never had her tested for food allergies/sensitivities as the dermatologist said it wasn’t necessary.
She does well on Nutrisca Salmon and Chickpea

excerpt below from: http://www.2ndchance.info/Apoquel.htm
“Food Allergies are probably over-diagnosed in dogs (they account for, perhaps 5-10%). Hypoallergenic diets are occasionally, but not frequently, helpful in canine atopy cases but you should always give them a try. Food intolerances are more common – but considerably more likely to result in digestive disturbances and diarrhea than in itching problems”.

Mail-in hair and saliva tests do not test for allergies and tend to be inaccurate. Food sensitivities fluctuate. Food allergies are rare.