I tried the food and environmental test for both my dogs. It seems to be about 90% accurate since we also took them to a dermatologist for allergy testing, and the results showed that their indoor and outdoor allergies are almost the same. As for the food part, I think it's pretty accurate because whenever we give them something they’re allergic to, within a day or two, they become really itchy, their feet get swollen and red, and one even ended up vomiting. We took her for meds to stop the vomiting, stopped the food, and she was back to normal with no more vomiting.