By exposing small areas of the skin to different allergens, observing how the skin reacts to each, your veterinarian can tell which, if any, your pet may be sensitive to.

• 由暴露皮肤的小範围于不同的变态反应原,观察怎麽皮肤起反应对每个,您的兽医能告诉哪些,如果有,您的宠物也许是敏感的。