Is your vet talking about environmental (atopy) or food allergies? Nikki is my second GSD with allergies and both received allergy injections (not steroids) with great results.
From what Nikki's dermatologist told me there are still no reliable tests for food sensitivities available. I am attaching some links from Dr. Lewis, a wonderful dermatologist that treated my Heidi for five years. Hope that helps a little
The Allergy Testing Debate-Serology vs. Intradermal | Dermatology for Animals
Food Allergy | Dermatology for Animals
That's because they don't work. Ask any vet derm this question.environmental allergies, I'm not sure it matters. There is some success with blood allergy testing via blood, I've had very good luck using spectrum labs to help determine food allergies. allergy mapVeterinarians | Veterinarians
Food sensitivities, which Dodds tests for, can be a problem, but, I don't believe her when she says that food allergies are rare. I'm 3 for 3 here, in dogs I've run the blood allergy test on, and each time it's helped me a lot. Most vets don't put a lot of stock in the blood allergy test for food allergies, though some do (it was an old vet that wanted me to run the test the.