Gluten Intolerance More Condition_symptoms Best Way To Detect Gluten Intolerance In Dog?

Best way to detect gluten intolerance in dog? - gluten intolerance more condition_symptoms

Hello, I suspect that my dog may have an intolerance to gluten?
I am in the United Kingdom, how can I confirm or deny my suspicions?
Are there home kits available?
Are blood tests accurate?
Thank you.