In my experience, a veterinary specialist does not do any more testing than is necessary, due to their expertise they are able to zero in on the problem and be selective about what’s important to rule out first.
And, they will explain each test, reasons for it and go over the results with you.
Remember, only a veterinarian that has examined your dog can diagnose and prescribe treatment.
Be leery of homeopathic remedies, such as supplements and over the counter medications.
You could cause more harm.
PS: Mail-in saliva and hair tests tend to be inaccurate and food sensitivities can fluctuate (if you read the fine print they recommend repeating the test from time to time)
