For identifying a true food reaction, a strict 8–12 week elimination diet trial wins — it's the method veterinary dermatologists consider definitive. A 5Strands hair-and-saliva panel wins on speed and convenience, returning a 100–300+ item screening list in about 7–10 business days. The deciding factor is whether you need a diagnosis or a shortlist. Many owners use the panel to narrow which limited ingredient dry dog food to trial first.
That distinction matters more than most marketing suggests. One tool produces a hypothesis. The other tests it. Below is what each one measures, what it costs you in time and effort, and how to translate either result into an actual bag of food.
What does each method actually detect?
A 5Strands pet intolerance test is a non-diagnostic bioresonance screening of hair and saliva that flags items your pet's sample responded to at low, moderate or severe levels. An elimination diet trial measures something different: whether clinical signs like itching, paw licking or loose stool resolve when a single novel or hydrolysed protein is fed exclusively.
Neither is an allergy test. True IgE-mediated food allergy is a specific immune response, and the American Veterinary Medical Association and veterinary dermatology literature indexed on PubMed — including reviews published through 2024 — consistently report that blood, saliva and hair-based panels correlate poorly with confirmed food allergy in dogs and cats. 5Strands itself markets its kits as intolerance and sensitivity screenings, not medical diagnostics, which is an important piece of honesty in the product's own labelling.
So what's the panel good for? Narrowing the field. If your dog has eaten chicken, beef, salmon and lamb across three different brands, you have no obvious starting protein. A screening that flags chicken and beef as high-response items gives you a defensible reason to start the trial on kangaroo, duck or venison instead of guessing.
How accurate is the 5Strands pet test?
5Strands reports results as response levels rather than confirmed allergies, and independent peer-reviewed validation of bioresonance methodology is limited. Treat the output as a prioritized shortlist, not a verdict. The only way to confirm a food trigger is to remove the suspected ingredient, watch for improvement over 8–12 weeks, then deliberately reintroduce it.
How long does each one take to give you an answer?
The 5Strands kit turns around in roughly 7–10 business days from lab receipt; collecting the sample takes under five minutes and needs about 10–15 strands of hair plus a saliva swab. A properly run elimination trial takes 8–12 weeks of strict feeding, followed by a 1–2 week rechallenge — roughly 10 to 14 weeks total.
That gap is the real reason owners reach for a test kit first. Twelve weeks feels impossible when your dog is chewing its feet raw in February. But the trial timeline exists for a physiological reason: cutaneous adverse food reactions can take 6–8 weeks to visibly improve, and gastrointestinal signs often settle faster, within 2–4 weeks. Stopping at week four because "nothing changed" is the single most common way owners waste a trial.
In our store we see customers who ran two- or three-week "trials" with treats and dental chews still in rotation, then concluded food wasn't the issue. It usually was. One stolen biscuit can reset the clock, which is why single-ingredient dog treats matching the trial protein are non-negotiable during those weeks.
How do you run a food elimination trial for a dog correctly?
Pick one protein and one carbohydrate your dog has never eaten, feed only that for 8–12 weeks, and eliminate every other food source — treats, table scraps, flavoured supplements, flavoured parasite preventives and chews. Keep a weekly log of itch score, stool quality and ear condition. Then reintroduce one previous ingredient and watch for 14 days.
What does each option cost in money and effort?
An at-home intolerance kit is a one-time purchase in the $$ range with almost zero ongoing effort. An elimination trial has no test fee but carries the cost of 10–14 weeks of a novel-protein or hydrolysed diet, which typically sits in the $$–$$$ tier per kilogram compared with a standard adult formula.
Run the numbers on food, not on the kit. A 25 kg dog eating a limited ingredient recipe at roughly 380 kcal per cup needs about 2.5–3 cups daily to hit an approximate 950–1,100 kcal maintenance requirement. Over 12 weeks that's meaningful, and switching brands mid-trial to save money invalidates the whole exercise.
Effort is where the trial gets expensive in a different currency. Everyone in the household has to comply. Dog-park biscuits from a friendly stranger along the Humber River trails count. Our nutrition experts at the store usually suggest owners buy the full 12 weeks of food up front so there's no temptation to "bridge" with whatever's on the shelf at home.
How do you choose the limited ingredient diet after an intolerance test?
Match the trial diet to three things: a protein not on your shortlist, a life-stage-appropriate guaranteed analysis, and an AAFCO nutritional adequacy statement. The 2026 edition of the AAFCO Official Publication sets minimums of 18% crude protein for adult dog maintenance, 22.5% for growth and reproduction, 26% for adult cats and 30% for kittens on a dry-matter basis.
For dogs, novel-protein options worth shortlisting include Zignature's single-animal-protein recipes, Go! Solutions Sensitivities, Acana Singles, ZIWI air-dried, Open Farm and Natural Balance limited ingredient formulas. For cats, the same logic applies with a narrower protein pool — rabbit, duck and venison are common starting points, and taurine levels matter as much as the protein source. Browse single-protein raw cat food or our wet cat food range when building a feline trial, since higher moisture often helps cats with concurrent urinary or stool issues.
Three technical details owners miss. First, fat content drives calorie density more than protein does, so a 16% fat trial food will need smaller portions than the 12% fat food you left behind. Second, fibre content between 3% and 6% generally supports stool consistency during a diet change. Third, added omega-3 and omega-6 at a sensible ratio supports skin barrier function during the itchy weeks — some owners add a fish oil from our dog health and wellness range, but only unflavoured formats belong in a strict trial.
Pet owners tell us the transition itself causes more panic than the trial. Go slow: 25% new food for three days, 50% for three days, 75% for three days, then full. Adding a probiotics or prebiotics supplement after the trial concludes is fine; during the trial, keep the variables down.
Is food intolerance testing for cats available in Canada?
Yes — 5Strands sells cat-specific kits and Canadian owners can purchase them through retailers carrying cat health and wellness products, including pet test kits. Sample collection is identical to the dog version, and the same caveat applies: results are screening-level, and a strict novel-protein trial is still what confirms a food trigger in cats.
Skip the test kit if... / Skip the trial if...
Skip the 5Strands panel if you already know the culprit, if your pet is showing acute symptoms that need veterinary attention, or if you expect a diagnosis rather than a shortlist. It's also poor value if your pet has only ever eaten two proteins — you can design the trial without it.
Skip the home elimination trial if you can't control 100% of what your pet eats for three months, if there are young children dropping food, or if your pet has a medical condition requiring a therapeutic diet. Also skip it if the symptoms point away from food entirely — seasonal flare-ups that vanish in December usually indicate environmental allergens, and the Canadian Veterinary Medical Association recommends a veterinary workup before assuming diet is the driver. Persistent itching, hair loss, vomiting or weight change always warrants a vet visit first.
Our team at Ashario Pets recommends a hybrid approach for most multi-protein histories: screen, shortlist, then trial the top candidate properly. When a customer comes in with a four-year-old dog that's cycled through six foods, that sequence saves months of guesswork.
Side-by-side recap
| Feature | 5Strands Pet Intolerance Test | Home Elimination Diet Trial |
|---|---|---|
| Best for | Narrowing a long list of previously fed proteins | Confirming a genuine food trigger |
| What it measures | Sample response levels across 100–300+ food and environmental items | Clinical improvement on one novel or hydrolysed protein |
| Time to answer | About 7–10 business days | 8–12 weeks plus a 1–2 week rechallenge |
| Owner effort | Low — one hair and saliva sample | High — total dietary control, weekly symptom logging |
| Diagnostic weight | Screening only, not a diagnosis | Considered the reference standard in veterinary dermatology |
| Price tier | $$ one-time | $$–$$$ across 10–14 weeks of food |
| Available at Ashario | Shop pet test kits | Shop limited ingredient dog food |
Visit us at 1111A Finch Ave W, Unit 2, North York, ON M3J 2P7 — we're open 7 AM to 11 PM daily, and delivery is available across the GTA through apps like Uber Eats.
Shop the Brands Mentioned in This Article
Find 5Strands, Zignature, and other premium pet supplies in-store or Browse limited ingredient dry dog food online →.
Questions owners ask before they start
Can I skip the trial if the test flags only one ingredient?
You can act on it, but you haven't confirmed anything. Remove the flagged ingredient for 8–12 weeks and track symptoms — that's a trial by another name. If signs improve and return on rechallenge, you have your answer. If nothing changes, the flagged item probably wasn't the driver, and a proper novel-protein trial is the next step.
Do treats and chews really ruin an elimination trial?
Yes. A single 15 g biscuit containing chicken meal can trigger a reaction that masks weeks of progress. During a trial, the only acceptable treats are single-ingredient options made from the trial protein, or small pieces of the trial food itself. Flavoured dental chews, flavoured supplements and flavoured medications all count as dietary exposure.
What should I do after the trial ends?
Rechallenge deliberately, one ingredient at a time, for 14 days each. Once you know which proteins are safe, you can rotate among them or settle on a permanent formula. Compare options in our pet food for specific needs guide, and check the dog wellness needs page for supplement pairings once the diet is stable. Discuss the full plan with your veterinarian before making long-term changes.
At a glance: A 5Strands kit gives you a fast, low-effort shortlist in about 7–10 business days, while a strict 8–12 week elimination trial is the only method that confirms a food trigger. Use the panel to choose your starting protein, then run the trial properly with total dietary control. Any persistent itching, vomiting or weight loss belongs in front of a veterinarian first.
Questions about choosing a novel-protein formula for your dog or cat? Contact our team, read our pet store FAQ, or explore more nutrition guides on the dog blog and cat blog.
