Apoquel is prescribed for environmental allergies, not food allergies (rare) or food sensitivities that tend to fluctuate.
Hair and saliva mail in tests are a scam.
I would suggest that you take your dog to a veterinary dermatologist for testing and an accurate diagnosis and treatment options.
Environmental allergies are complicated, there is no cure but there is effective treatment.
Hope this helps http://skeptvet.com/Blog/?s=Allergies
and check the search engine here for allergies and see my posts,
example. /forums/topic/environmental-allergy-relief/
/forums/search/Dr+Dodds+nutriscan/
