Understanding Genetic Testing: What DNA Panels Actually Tell You

Published by Boise Doodle Co · Ethical Breeding Series

"Genetically tested" has become one of the most common phrases in ethical breeder listings — and one of the most misunderstood by buyers.

Some breeders use it to mean a full, breed-appropriate DNA disease panel from an accredited laboratory. Others use it to mean they ran a $79 ancestry kit from a big-box store. The phrase alone tells you almost nothing. What matters is understanding what was tested, why it matters, and how to read the results — so you can tell the difference between a breeder who is genuinely doing the work and one who is using the language without the substance.

This post is your complete guide to canine genetic testing: what it is, how it works, what clear vs. carrier vs. affected actually means, and what you should expect to see from any breeder worth trusting.

What Is Canine Genetic Testing?

Canine genetic testing — specifically DNA disease panel testing — analyzes a dog's DNA to identify whether it carries gene variants associated with inherited diseases. A simple cheek swab or blood sample is sent to a veterinary genetics laboratory, where the DNA is extracted and tested against a panel of known disease-causing mutations.

The key word is known. Genetic testing can only detect mutations that have been identified and validated by researchers. This means genetic testing is powerful but not all-encompassing — a "clear" result means the dog doesn't carry the mutations on that specific panel, not that it's guaranteed free of every possible inherited condition. Understanding this distinction matters.

The Labs That Matter

Not all genetic testing is created equal. The laboratories with the strongest scientific credibility and the most validated, breed-specific tests are:

Embark Veterinary — widely considered the gold standard for canine genetic testing. Embark uses a research-grade SNP chip that tests for over 250 genetic health conditions and partners with Cornell University College of Veterinary Medicine. Their breed-specific disease panels are comprehensive and continuously updated as new research emerges.

Paw Print Genetics (PPG) — a laboratory that focuses specifically on breed-relevant disease panels. PPG is highly regarded in the purebred and purposeful mixed-breed community for their rigorous validation standards and breed-specific testing packages.

UC Davis Veterinary Genetics Laboratory — one of the oldest and most respected veterinary genetics labs in the country, with a strong research foundation and a range of breed-specific tests.

OptiGen — specializes in eye diseases, particularly progressive retinal atrophy (PRA) variants across multiple breeds.

These are the labs whose results carry weight. Results from consumer ancestry kits — even reputable ones — are not the same thing and should not be presented as equivalent by a breeder.

How Genetic Inheritance Works: The Foundation You Need

To understand what test results mean, you need a quick foundation in how genetic diseases are inherited. Bear with us — this is the part that makes everything else make sense.

Most hereditary diseases in dogs are caused by recessive gene mutations. This means a dog needs to inherit two copies of a mutated gene — one from each parent — in order to be affected by the disease. A dog that inherits only one copy of the mutated gene is a carrier: they won't develop the disease themselves, but they can pass the mutation to their offspring.

Think of it like this: every dog has two copies of every gene — one inherited from mom, one from dad. For a recessive disease:

• Clear (N/N): The dog has two normal copies of the gene. It cannot develop this disease and cannot pass the mutation to offspring.

• Carrier (N/Mut or "Carrier"): The dog has one normal copy and one mutated copy. It will not develop the disease, but it can pass the mutation to 50% of its offspring on average.

• Affected (Mut/Mut): The dog has two mutated copies. It will develop the disease (or is at high risk of doing so) and will pass one copy of the mutation to every offspring.

This is why pairing decisions matter so much:

Pairing Possible Offspring Clear × Clear 100% Clear Clear × Carrier 50% Clear, 50% Carrier — no Affected Carrier × Carrier 25% Clear, 50% Carrier, 25% Affected ⚠️ Clear × Affected 100% Carriers Carrier × Affected 50% Carriers, 50% Affected ⚠️ Affected × Affected 100% Affected ⚠️

The takeaway: a Carrier dog is not a bad dog and is not automatically disqualified from breeding. But it must only be paired with a Clear dog. When an ethical breeder does this correctly, no Affected puppies can result — the worst outcome for any puppy in the litter is being a Carrier themselves, which causes no health problems.

The breeding combinations that should never happen — Carrier × Carrier, Carrier × Affected, Affected × Affected — are entirely preventable with proper testing and responsible pairing decisions.

Some Diseases Are Dominant, Not Recessive

It's worth noting that not every inherited condition follows the recessive model. Some mutations are autosomal dominant, meaning a dog only needs one copy of the mutation to be affected. In these cases, a carrier is an affected dog — and breeding an affected dog will pass the condition to approximately half of all offspring regardless of what the other parent contributes.

For dominant conditions, an ethical breeder does not breed affected dogs. Period.

What Diseases Should Be Tested For?

This is where breed-specific knowledge becomes essential. There is no universal panel that covers every breed — the mutations that are common and dangerous in Golden Retrievers are different from those in Poodles, Cavaliers, Australian Shepherds, or Bernese Mountain Dogs.

Ethical breeders don't run a generic test and call it done. They research the diseases that are prevalent in their breed(s) and ensure their testing panel covers all of them. Here are some examples:

For Golden Retrievers

• Progressive Retinal Atrophy (prcd-PRA)

• Ichthyosis (skin condition)

• Degenerative Myelopathy (DM)

• Muscular Dystrophy

• Sensory Ataxic Neuropathy

• Dystrophic Epidermolysis Bullosa

For Poodles (Standard, Miniature, Toy)

• Progressive Retinal Atrophy (prcd-PRA and other variants)

• Degenerative Myelopathy (DM)

• Neonatal Encephalopathy with Seizures (NEWS) — Standard Poodles

• Von Willebrand's Disease (vWD)

• Sebaceous Adenitis (SA) — evaluated separately, as it requires a skin punch biopsy

For Cavalier King Charles Spaniels

• Degenerative Myelopathy (DM)

• Episodic Falling Syndrome (EFS)

• Dry Eye and Curly Coat Syndrome (CC-DE)

• Macrothrombocytopenia

• Progressive Retinal Atrophy variants

• Note: MVD (Mitral Valve Disease) and Syringomyelia are evaluated through cardiac and MRI screening, not DNA panels — genetic markers for these conditions are still being researched

For Bernese Mountain Dogs

• Degenerative Myelopathy (DM)

• Progressive Retinal Atrophy (prcd-PRA)

• Von Willebrand's Disease (vWD)

• Malignant Hyperthermia

For Australian Shepherds and Aussie-cross programs

• MDR1 / ABCB1 Drug Sensitivity — critical; affected dogs can have life-threatening reactions to common medications including ivermectin, certain anesthetics, and chemotherapy drugs

• Hereditary Cataracts (HC)

• Progressive Retinal Atrophy (prcd-PRA)

• Collie Eye Anomaly (CEA)

• Degenerative Myelopathy (DM)

• Hyperuricosuria (HUU)

Genetic Testing in Doodle Programs: Both Parents, Both Breeds

This point cannot be overstated: in a mixed-breed or Doodle program, both parent dogs must be tested for the diseases relevant to their own breed.

A Goldendoodle is half Golden Retriever and half Poodle. The Golden parent needs to be tested against a Golden-appropriate panel. The Poodle parent needs to be tested against a Poodle-appropriate panel. Running only one test on one parent, or running a generic multi-breed panel without confirming it covers the relevant mutations, leaves gaps.

A Bernedoodle breeder who only tests for Poodle diseases and ignores Bernese Mountain Dog conditions isn't doing genetic testing — they're doing selective reassurance.

Ethical Doodle breeders can provide results for both parents, on breed-appropriate panels, from accredited laboratories, and explain what those results mean for the puppies in a given litter.

Coat and Size Genetics: What Ethical Doodle Breeders Also Test

Beyond disease panels, responsible Doodle breeders test for traits that directly affect what kind of dog a family is getting — particularly coat type and shedding.

Furnishings (IC Locus)

The furnishings gene is responsible for the "Doodle look" — the eyebrow tufts and mustache/beard that give Doodles their signature teddy bear appearance. Dogs can be:

• Furnished/Furnished (FF): Two copies — will always have furnishings

• Furnished/Unfurnished (Ff): One copy — will have furnishings but can produce unfurnished puppies

• Unfurnished/Unfurnished (ff): No furnishings — the "flat coat" look; these dogs also tend to shed significantly more

Families expecting a low-shed Doodle need a puppy that carries at least one furnishings gene — ideally two. Breeders who don't test for this are guessing, and families with allergies or shedding sensitivities are the ones who pay the price.

Curl Gene (KRT71)

The curl gene determines coat texture — from straight to wavy to curly. In combination with the furnishings gene, it helps predict the full range of coat types possible in a litter. Ethical breeders use this alongside the furnishings test to give families accurate expectations about what coat their puppy will have.

Size Genetics

For programs producing miniature or medium Doodles, size genetics testing can help predict adult size with more precision than simply averaging parent weights — particularly relevant in multi-generational programs and when Miniature Poodles are involved.

What Legitimate Genetic Testing Results Look Like

When you ask a breeder for genetic testing documentation, here's what you should expect to see:

Actual lab reports, not summary statements. A PDF or printed report from Embark, Paw Print Genetics, UC Davis, or another accredited lab — with the dog's name, registration number, date of testing, and individual results for each condition tested.

Results for both parents. Not just one. Both.

Clear identification of each result as Clear, Carrier, or Affected for every condition on the panel.

Breed-appropriate panels. If you're buying a Goldendoodle and the Poodle parent's results don't include prcd-PRA, vWD, or DM, that's a gap worth asking about.

Willingness to explain. An ethical breeder should be able to explain what the results mean, why a Carrier dog in the program is acceptable in a specific pairing, and what the resulting puppies' risk profile is. If a breeder can't or won't walk you through their results, that tells you something.

Red Flags in Genetic Testing Claims

Watch out for these:

"Our dogs are genetically tested" with no documentation offered. The phrase means nothing without the paperwork.

Results from a consumer ancestry kit only. These can be informative for ancestry and some traits, but they are not equivalent to a full disease panel from a veterinary genetics laboratory.

Testing only one parent. In any breeding program, both parents need testing. In mixed-breed programs, both parents need breed-appropriate testing.

A panel that doesn't include the most common diseases for the breeds involved. Ask specifically: "Is DM on the panel? Is prcd-PRA? What about MDR1 if there's Aussie in the line?"

Results that are years old without updates. As new mutations are identified and validated, panels are updated. A responsible breeder keeps their testing current.

The Bigger Picture: What Genetic Testing Can and Can't Do

Genetic testing is one of the most powerful tools in a responsible breeder's toolkit — but it isn't magic, and it has limits.

It can tell you: Whether a dog carries known, validated disease-causing mutations. Whether a pairing will produce affected puppies for those specific conditions. What coat type and shedding tendency to expect from a litter.

It cannot tell you: Whether a dog will develop a disease with complex, multi-gene inheritance (like most cancers). Whether a dog's hips are structurally sound (that requires radiographs). Whether a dog has a heart defect (that requires a cardiac exam). Whether a dog has healthy eyes (that requires an ophthalmology exam). Everything about a dog's future health.

This is why genetic testing is one pillar of ethical breeding — not the whole structure. It works alongside OFA health certifications, cardiac evaluations, eye exams, temperament evaluation, and pedigree analysis. A breeder who does genetic testing but skips structural health evaluations is doing partial work. A breeder who does structural health evaluations but skips genetic testing is also doing partial work.

The full picture requires all of it.

What to Ask Every Breeder About Genetic Testing

Use these questions to separate the programs doing the work from the ones using the language:

• [ ] Can you send me the actual lab reports for both parents?

• [ ] Which laboratory did you use, and is it accredited for veterinary genetics?

• [ ] What specific diseases were included on the panel?

• [ ] Has your breed's most common hereditary conditions been covered — and can you name them?

• [ ] If either parent is a Carrier for anything, which condition, and what does that mean for this litter?

• [ ] For Doodle programs: have you tested for furnishings and curl genetics? What coat types are possible in this litter?

• [ ] When were these tests performed, and are they current?

A breeder who welcomes these questions and answers them with documentation is showing you exactly the kind of transparency that protects you and your future puppy.

The Bottom Line

Genetic testing done right is one of the most meaningful things an ethical breeder can do — not just for the families receiving puppies, but for the long-term health of the breeds they steward.

When a breeder tests both parents on breed-appropriate panels, understands what the results mean, makes pairing decisions based on those results, and shares full documentation openly — they are doing something that matters. They are breaking a chain of preventable disease that might otherwise run for generations.

That is what "genetically tested" should mean. Now you know how to verify it.

Want to see our full genetic testing documentation? We publish our dogs' results openly because transparency isn't something we talk about — it's something we do. Reach out anytime.

More in This Series:

• OFA vs. PennHIP: What Every Ethical Breeder Does Before Placing a Puppy

• What Makes a Good Breeding Dog (Hint: It's Not Just Looks)

• The Real Cost of a "Cheap" Puppy

• What Is a Guardian Home and Why Do Ethical Breeders Use Them?

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