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How to Test Your Dog For Food Allergies – Food Elimination Trial Test

Posted by Dr Sam, On 22 Nov, 2021 | Updated On 3 Jan, 2022 No Comments »

Do-it-yourself, simple food elimination trial test to discover foods your dog is reacting to. There is no blood test for dog food allergies but this. Check it out!

When it comes to feeding your dog homemade food, one of the most important things you need to know is how to test your dog for food allergies. This is because food allergies is one of the most health issues with dog. Testing your dog for food allergies is a procedure you can do yourself.

Blood and Saliva Tests to Identify Foods that Give Dogs Allergic Reactions

Most pet parents want to know if there is a blood or saliva test that can help them identify foods that cause dogs allergic reactions. Don’t be disappointed as there is no such laboratory test. But to help pooch owners, experimental studies have been done on foods and they are categorized into hyper allergenic and hypoallergenic foods for dog. See the list in our dog allergic reaction to food post.

How to Know Foods Your Dog is Allergic to

Food elimination trial test is the only procedure you can used to identify food that can cause your dog allergic reactions. This procedure is very simple and it is what you can do yourself. You may not even need a vet for it.

Food Elimination Trial Test

First, you need to be sure and eliminate other causes of dermatosis – itchiness (especially parasites and infections) by microscopic laboratory examination. Verify with your vet if your dog is not having underlying illness in place. This is because there are some pooch disease symptoms that are similar to food allergic reactions’ signs.

Statistics have proved it and experience has also shown me that; there are dogs that react to most hypoallergenic food, and there are some that do not react to most allergenic one. There are dogs which react to chicken and there are some that do not react to it. And this is so for every food stuff.

This is the reason you must always do homemade food allergy trial test for your dog before changing her diet to new food.

Reaction of your dog to a specific-food-stuff (let say chicken based commercial food) does not always means she will react to chicken homemade food. It might have been that she reacted to additive in commercial food.

Food Elimination Procedure

The easiest way to be sure if your dog is having allergic reactions to a food stuff is to cook small portion of the food and feed your dog once per day for 3 days. Allergic reactions manifest in dog within 48 hours of intake of the allergen.

Follow the same procedure for every other food and ingredient.

So if your dog does not manifest any of the adverse reactions then the food is safe for her.

Food Transition

Changing your dog’s diet quickly could give her stomach upset, leading to diarrhea and stomachache. So it is advisable you let transition to new food last for about two weeks.

Since allergic reactions will usually be seen within 48 hours of the introduction of an allergen and may last for up to 5 days. Therefore, let the transition be as follow:

Days 1–4: Feed 75% of the old food and 25% of the new food.
Days 5–8: Feed 50% each of old and new food.
Days 9–12: Feed 25% of the old food and 75% of the new food.
Day 13 and on: Feed all new food.

NOTHING except for the selected diet and water should be given to your dog during the food trial. It is important that an elimination diet be strictly followed.


How to Test Your Dog For Food Allergies and identify the allergens are simple procedure you can do yourself. The procedure is a simple food elimination trial test. You must be sure your dog is not having underlying illness that give similar symptoms as food allergies before carrying out the procedure.

Thank you.

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