Diagnosis is made based on the results of intradermal skin testing or by in vitro blood testing. (cheshirecatclinic.com)
If your veterinarian suspects that your pet has atopy, he or she may offer a referral to the dermatologist for intradermal allergy testing where a small amount of test allergens are injected in the skin and a wheal (a bump) response is measured. (vetsaverspethospital.com)
Dose sparing with intradermal injection of influenza vaccine. (nejm.org)