How we score dog DNA tests
Every Sniff Score comes from published evidence that you can check yourself. We don't test kits ourselves, and we never claim to.
What you can hold us to
- We never claim to have tested a kit. We write "owners report" and "the study found," never "we tried."
- Accuracy evidence comes first. A test that failed an independent check, with no verified fix, can't be a pick.
- Every verdict shows its receipts: studies, ratings, retailers, prices and the date we last checked.
- Money never moves a score. Affiliate commissions have no input into scores or rankings.
- Health results go to a vet. We never tell readers to act on a DNA health result without confirmatory testing.
The five inputs
Each input is rated 0 to 10 against fixed anchors, then weighted. Breed-only kits skip the health input, and the other weights are rescaled. Our main accuracy evidence today is a peer-reviewed 2024 study in JAVMA (JAVMA (2024): six direct-to-consumer tests on 12 registered purebred dogs).
| Input | Weight | What a 10 looks like |
|---|---|---|
| Accuracy evidence | 30% | Independent checks passed, published validation, an accredited lab |
| Owner satisfaction | 20% | Star ratings from retailers, at least 300 ratings in total |
| Health report quality | 20% | At-risk vs carrier made clear, vet-shareable, a consult on offer |
| Breed reference panel | 15% | How many breeds, and how reliably mixes are resolved |
| Value and data care | 15% | Fair price for what's included, clear privacy and research opt-outs |
Sniff Score = round(0.30 × accuracy + 0.20 × owners + 0.20 × health report + 0.15 × breed panel + 0.15 × value and data care)
Two gates, checked first
- Accuracy gate: a documented failed independent check (a non-dog sample read as dog, results contradicting registered pedigrees) caps the score at 4 until the company shows a fix that has itself been independently checked.
- Pseudoscience gate: kits that claim to diagnose allergies or intolerances from hair or saliva get no score and go on the Skip list.
Minimum evidence to publish a score
- At least 300 owner ratings, from more than one retailer where available. We don't use Amazon review data, because its terms limit how that data can be used.
- Six months on the market, so long-term problems have time to show.
- Below that bar, a test shows "Not enough evidence" and no number. It can't be a pick.
The Vet Check
Four questions answered from company documentation and owner reports: Is the report easy to share with a vet? Does it separate at-risk from carrier? Does it recommend confirmatory testing? Is a professional consult included?
Tiers
9–10 Best in Show · 7–8 Good Dog · 4–6 Needs Training · 1–3 Bad Dog. We only recommend tests scoring 7 or higher. Popular tests below 7 get a clear Skip it. See the results in the best dog DNA tests of 2026.
Refreshes and corrections
- Prices and buy links: monthly. Lab Watch: weekly. Scores: every 90 days, or the same day a new study or investigation lands.
- When we change a score, we add a dated note to the review. We never quietly delete an old verdict.
- Spot an error? Email info@dnayourdog.com.
Last updated Oct 20, 2026.
Five inputs
Best in Show
Our top pick in its category.
Good Dog
A solid buy we recommend.
Needs Training
Shown as a Skip it warning.
Bad Dog
Avoid. We say why.
A failed independent check caps the score at 4 until a fix has itself been verified.
Kits claiming to diagnose allergies from hair or saliva get no score. They go straight to the Skip list.