[Anonymous]

I just wanted to make sure that you understand that the saliva and hair tests are not allergy tests.
/forums/search/allergies/
http://www.allergydogcentral.com/category/symptoms/

Canine Nutrigenomics by Dr. Jean Dodds: Science as Windowdressing

PS: Many dogs suffering with these issues end up at shelters or the pound, as people are unwilling, for a variety of reasons, usually financial, to take them to a dermatologist.
Best of luck.