Health Certs, Decoded: What OFA, PennHIP, and Genetic Testing Actually Tell You About a Puppy

Every responsible breeder will eventually hand you a stack of documents — or at least point you to an online database — and tell you their dogs are "health tested." It sounds reassuring. But if you've ever stared at an OFA rating or a genetic panel result and thought, what does this actually mean for my future dog? — you're not alone.

Health certifications aren't just bureaucratic box-checking. When you understand what's behind them, they become a window into a breeder's priorities, their transparency, and the long-term wellbeing of the puppy you're about to bring home. Let's break it all down.

Why Health Testing Exists in the First Place

Dog breeds, by their very nature, carry genetic baggage. Centuries of selective breeding for specific traits — size, coat, temperament, working ability — also concentrated certain inherited health problems within breed lines. Hip dysplasia, eye conditions, heart defects, and dozens of other conditions can be passed silently from one generation to the next without any visible signs in the parent dogs.

Health testing programs were developed to give breeders — and buyers — tools to identify which dogs are likely carriers of these conditions before they're bred. The goal isn't to find "perfect" dogs (those don't exist). It's to make informed decisions that reduce the odds of puppies inheriting debilitating conditions.

OFA: The Gold Standard for Orthopedic Health

The Orthopedic Foundation for Animals, better known as OFA, has been evaluating dogs since 1966. Their database is one of the most comprehensive canine health registries in the country, covering everything from hips and elbows to hearts and eyes.

What it tests: OFA evaluations are breed-specific, but hip and elbow dysplasia are among the most common screenings. Hip evaluations are typically done via X-ray, and the images are reviewed by a panel of board-certified veterinary radiologists. Results are graded on a seven-point scale: Excellent, Good, Fair (all passing), Borderline, and then Mild, Moderate, or Severe dysplasia (all failing).

What to look for: When a breeder says their dogs are "OFA certified," ask to see the actual grade — not just a passing certificate. "Fair" is technically a pass, but a breeding program consistently producing "Excellent" or "Good" ratings is making a stronger commitment to orthopedic health. You can verify any OFA result yourself at ofa.org, where public records are searchable by the dog's registered name.

One important caveat: OFA hip evaluations are typically done at 24 months or older for a preliminary certification. Some breeders conduct preliminary evaluations at a younger age, which can be useful but aren't considered final. Always ask how old the parents were when their evaluations were completed.

PennHIP: A Different Approach to Hip Evaluation

PennHIP (Pennsylvania Hip Improvement Program) is another widely respected hip evaluation method, and it works quite differently from OFA. Developed at the University of Pennsylvania, PennHIP uses a distraction technique to measure joint laxity — essentially, how loose the hip joint is — and expresses results as a Distraction Index (DI) score.

What the numbers mean: DI scores range from 0 to 1. Lower is better. A score of 0.3 means very tight hips; a score of 0.7 means significant laxity and a higher risk for developing arthritis or dysplasia. PennHIP also compares each dog's score to the breed median, so you can see how a dog stacks up against others of the same breed.

Why some breeders prefer it: PennHIP can be performed as early as 16 weeks, which allows breeders to make earlier breeding decisions. Some researchers also argue it's a more objective measure than OFA's radiologist panel system. Neither method is universally "better" — but a breeder who uses both is doing their homework.

Genetic Screening: The New Frontier

Over the past decade, DNA-based genetic testing has transformed what breeders can know about their dogs before a single puppy is born. Companies like Embark, Wisdom Panel, and the UC Davis Veterinary Genetics Laboratory offer panels that test for dozens — sometimes hundreds — of known genetic mutations linked to inherited disease.

What it tests: Genetic panels vary by breed and testing company, but common conditions screened for include progressive retinal atrophy (PRA), degenerative myelopathy (DM), von Willebrand's disease, exercise-induced collapse, and many others. Results typically identify dogs as Clear, Carrier, or Affected for each condition tested.

Understanding Clear vs. Carrier: This is where a lot of buyers get tripped up. A dog that tests as a "Carrier" for a recessive condition is not a sick dog — it carries one copy of the mutation but typically shows no symptoms. The risk comes when two carriers are bred together, which gives each puppy a 25% chance of being "Affected" (inheriting two copies of the mutation). A responsible breeder will never pair two carriers for the same condition. A Carrier bred to a Clear dog produces puppies that are statistically either Clear or Carrier, but never Affected.

What to ask: Request the full genetic panel results, not just a summary. You want to see which specific conditions were tested, and you want to understand the pairing logic — why were these two particular dogs bred together, given their results?

Red Flags to Watch For

Now that you know what legitimate health testing looks like, here's what should raise your eyebrows:

• "Vet checked" is not the same as health tested. A general wellness exam before a puppy goes home is standard practice, not a substitute for OFA, PennHIP, or genetic screening on the parents.
• No verifiable records. Legitimate certifications are documented and often publicly searchable. If a breeder can only offer verbal assurances, that's a problem.
• Testing only one parent. Both the sire and dam should be tested. A breeder who only screens one parent is cutting corners.
• Outdated results. Health certifications have expiration considerations. Ask when the evaluations were done and whether they reflect the parents' current status.

Putting It All Together

When you're evaluating a puppy, health certifications are one of the clearest indicators of how seriously a breeder takes their responsibility to the dogs — and to you. They represent real money spent, real time invested, and a genuine commitment to producing puppies with the best possible start in life.

At Applewood Kennels AZ, we believe buyers deserve to understand exactly what they're looking at when we share our health documentation. Ask us anything. We'd rather walk you through every result than have you walk away with unanswered questions. Because the more informed you are, the better match you'll make — and that's good for everyone, especially the dog.