Dog Breeding Health Testing: OFA, CHIC & DNA Guide

Health testing is the line between responsible breeding and rolling the dice with genetics. Every experienced breeder knows this — but the landscape of tests, certifications, and acronyms can overwhelm even seasoned programs. OFA, PennHIP, CHIC, CAER, Embark, COI — it adds up fast.

This guide cuts through the noise. You will learn exactly which tests your breeding dogs need, when to schedule them, what the results actually mean, and how to build a health testing protocol that protects your puppies, your reputation, and your breed.

Why Health Testing Matters for Every Breeding Program

Health testing serves two distinct purposes that breeders must understand separately.

Phenotypic evaluations — OFA hips, elbows, cardiac, eye, and patella exams — assess the physical structure and function of your dog right now. A dog with OFA Good hips has been radiographically evaluated and found to have well-formed hip joints. These tests catch structural problems that may or may not have a genetic component.

Genotypic (DNA) testing reveals whether your dog carries specific genetic mutations, regardless of whether the dog shows symptoms. A dog can be a carrier of degenerative myelopathy, appear completely healthy its entire life, and still pass the mutation to 50% of its offspring.

You need both. DNA testing alone misses structural issues like hip dysplasia that involve dozens of genes and environmental factors. Phenotypic evaluation alone misses hidden carrier status for single-gene disorders. Together, they give you the most complete picture of what your dog will contribute to the next generation.

The financial argument is straightforward: comprehensive health testing costs $800–$2,000 per dog. A single affected puppy with hip dysplasia can cost the buyer $3,000–$7,000 in surgery and lifetime management — and cost you far more in reputation damage, health guarantee claims, and the emotional toll of producing preventable suffering.

OFA Evaluations: The Foundation of Health Clearances

The Orthopedic Foundation for Animals maintains the largest database of canine health evaluations in the world. Understanding OFA's testing categories, grading systems, and age requirements is essential for any breeding program.

Available OFA Evaluations

OFA offers evaluations across a wide range of conditions. The most common for breeders include:

• Hip Dysplasia — Final certification at 24+ months, preliminary as young as 4 months
• Elbow Dysplasia — Final certification at 24+ months, preliminary as young as 4 months
• Cardiac Disease — Basic auscultation by cardiologist or advanced echocardiogram, 12+ months
• Eye Disease (CAER) — Annual exam by board-certified veterinary ophthalmologist, any age
• Patellar Luxation — 12+ months
• Thyroid — 12+ months
• Dentition, Sebaceous Adenitis, Legg-Calve-Perthes, Shoulder OCD, Spine, and DNA-based tests round out the available options

Your breed's parent club determines which of these evaluations are required for CHIC certification. Not every breed needs every test.

OFA Hip Grading — What the Results Mean

Three independent radiologists evaluate each final hip submission. The consensus determines the grade:

Grade	Status	What It Means
Excellent	Passing	Superior conformation. Deeply seated femoral head in a well-formed acetabulum with nearly complete coverage.
Good	Passing	Slightly less than superior. Well-formed congruent hip joint with proper ball seating and adequate coverage.
Fair	Passing	Minor irregularities. Wider joint than Good with slight subluxation. May be a normal variant for some breeds.
Borderline	Non-passing	Cannot be classified as normal or dysplastic. More incongruency than Fair but no arthritic changes. Resubmit in 6 months.
Mild	Non-passing	Significant subluxation. Ball partially out of socket with shallow coverage. Typically no arthritic changes yet.
Moderate	Non-passing	Ball barely seated in shallow socket. Secondary arthritic changes present including femoral remodeling.
Severe	Non-passing	Marked dysplasia. Ball partly or completely out of socket with extensive arthritic bone changes.

Only Excellent, Good, and Fair are considered passing and eligible for an OFA number. Dogs graded Borderline should be resubmitted after six months — some improve, some do not.

Preliminary vs. Final Evaluations

OFA preliminary evaluations can be performed as early as 4 months of age, giving breeders early insight into a puppy's structural development. These are read by a single OFA staff veterinary radiologist using the same grading criteria.

Research published in JAVMA examined the reliability of preliminary evaluations:

• Excellent preliminary: 100% reliability of being normal at 2 years
• Good preliminary: 97.9% reliability of being normal at 2 years
• Fair preliminary: 76.9% reliability of being normal at 2 years

By age at evaluation, reliability increases from 89.6% at 3–6 months to 95.2% at 13–18 months. Preliminaries are not guarantees, but they are a powerful screening tool that helps you identify dogs worth investing in before committing to a full breeding evaluation at two years.

OFA Fees

OFA filing fees are separate from veterinary costs for the actual X-rays, exams, and sedation. As of the current fee schedule:

Evaluation	OFA Fee	Estimated Total with Vet Costs
Hips (final)	$45	$200–$500
Elbows (final)	$45	$150–$400
Combined Hips + Elbows (final)	$50	$300–$600
Hip Preliminary	$35	$150–$350
CAER Eye Exam	$15	$60–$115
Cardiac	$15	$65–$425 (auscultation vs. echo)
Patellas	$15	$30–$100
Thyroid	$15	$75–$200
DNA-Based (per test)	$15	Varies by lab

Volume discounts: Litter rates for 3+ littermates run $120 per application. Kennel rates for 5+ animals drop to $25 each.

PennHIP vs. OFA: Understanding the Difference

Breeders frequently ask whether they should use OFA or PennHIP for hip evaluations. The answer depends on your goals, because these methods measure fundamentally different things.

Feature	OFA	PennHIP
What it measures	Anatomic abnormalities, natural laxity (subjective)	Distractibility under force, distraction index (objective)
Minimum age	24 months final, 4 months preliminary	16 weeks
Views required	1 ventrodorsal hip-extended	3 views (compression, distraction, hip-extended)
Sedation	Not required	Full sedation or general anesthesia required
Grading	Subjective: Excellent through Severe	Objective: Distraction Index number (DI >0.4 = increased risk)
Estimated cost	$200–$400 total	$400–$600+ total
Sensitivity	Lower — 52% of OFA Excellent dogs showed laxity on PennHIP	Higher — more accurate predictor of osteoarthritis

The PennHIP distraction index remains static over a dog's life, making it useful for early screening of breeding prospects. OFA is more affordable, more widely available, and accepted by all breed clubs for CHIC certification.

Some breeders perform both — PennHIP early to identify promising prospects, then OFA at 24 months for the official certification. The two methods measure different things and their results cannot be directly compared.

The CHIC Program: What It Actually Means

The Canine Health Information Center is a joint program between the AKC Canine Health Foundation and OFA. It provides a centralized database of health testing results with breed-specific requirements set by each breed's parent club.

How CHIC Certification Works

A dog earns CHIC certification when two conditions are met:

1. The dog has been screened for every condition recommended by its breed's parent club
2. All results have been made publicly available in the OFA database

Critical distinction most breeders miss: Results do not have to be "passing" or "normal." A dog with mild hip dysplasia can earn a CHIC number if all required tests are completed and disclosed. CHIC rewards transparency, not perfection.

Every dog must have permanent identification — microchip or tattoo — for results to be registered.

Breed-Specific CHIC Requirements

Each parent club determines what health evaluations are required. Here are examples for popular breeds:

Golden Retriever (GRCA):

1. Hips — OFA or PennHIP, final at 24+ months
2. Elbows — OFA, final at 24+ months
3. Cardiac — Must be evaluated by a board-certified cardiologist (general practitioner auscultation is not accepted)
4. Eyes (CAER) — Annual exam by board-certified ophthalmologist

Labrador Retriever (LRC):

1. Hips — OFA or PennHIP
2. Elbows — OFA
3. Eyes — CAER
4. EIC DNA test — Required
5. D Locus (Dilute) DNA test — Required
6. Optional but recommended: cardiac, CNM DNA, prcd-PRA DNA

French Bulldog (FBDCA):

1. Hips — OFA
2. Eyes — CAER
3. Patellas — OFA
4. Cardiac — OFA
5. Recommended: thyroid, Juvenile Hereditary Cataracts (HSF4-1) DNA test

Standard Poodle (PCA):

1. Hips — OFA or PennHIP, 24+ months
2. Eyes (CAER) — Annual
3. Plus at least one elective: thyroid, sebaceous adenitis, or cardiac
4. PCA Foundation strongly recommends NEwS and vWD DNA tests

Look up your breed's specific requirements at the OFA CHIC Programs page by browsing by breed.

DNA Testing for Breeders: Providers, Panels, and Interpretation

DNA testing has transformed breeding programs by revealing what physical exams cannot — carrier status for recessive conditions, genetic diversity metrics, and trait predictions.

Choosing a DNA Testing Provider

Feature	Embark for Breeders	Paw Print Genetics
Health conditions	270+	Varies by breed panel
Cost per test	$118–$139 (volume pricing)	$55–$85 per test (volume discounts)
COI calculation	Genomic COI + Pair Predictor	Not offered
Accuracy	>99% for mutation tests	PhD geneticists review all results
Clear by Parentage	Not offered	$20 per puppy
Turnaround	3–5 weeks	~2 weeks
Best for	Comprehensive breeding program management	Targeted breed-specific panels with fast turnaround

Embark is the most comprehensive option for breeding programs. Their Pair Predictor tool models genetic health, traits, and COI predictions for potential pairings — a first-in-industry feature. Litter packages run $109–$119 per puppy and include buyer-friendly DNA health summary brochures. Embark is a research partner of Cornell University College of Veterinary Medicine and screens across 230,000+ genetic markers.

Paw Print Genetics excels at targeted, breed-specific testing with fast turnaround. Their Clear by Parentage program saves money on subsequent litters — if both parents are tested and clear for a condition, puppies can be certified clear for just $20 each. Individual tests run $80–$85, with volume discounts dropping to $55 for five or more tests.

Common Genetic Conditions Every Breeder Should Know

• DM (Degenerative Myelopathy) — Progressive neurologic disorder causing muscle wasting in the hind limbs, typically appearing after age 8. Autosomal recessive. Affects German Shepherds, Corgis, Boxers, and many other breeds.
• vWD (Von Willebrand Disease) — Bleeding disorder from deficient clotting factor. Three types with five known mutations. Dobermans (Type 1), German Shorthaired Pointers (Type 2), Scottish Terriers (Type 3).
• EIC (Exercise Induced Collapse) — Loss of muscle control after 5–25 minutes of intense exercise. Primarily Labrador Retrievers and related breeds.
• PRA (Progressive Retinal Atrophy) — Retinal degeneration leading to blindness. Multiple gene variants exist with breed-specific forms (prcd-PRA, rcd1, rcd2, etc.).
• CNM (Centronuclear Myopathy) — Muscle disorder causing exercise intolerance in Labrador Retrievers.

Interpreting DNA Results: The Breeding Matrix

For autosomal recessive conditions — the most common inheritance pattern in canine genetics — results fall into three categories:

• Clear — No copies of the mutation. Will not develop the condition. Passes only normal genes.
• Carrier — One copy. Will not typically develop the condition. May pass the mutation to 50% of offspring.
• Affected — Two copies. Will or may develop the condition. Passes the mutation to all offspring.

The breeding implications:

Pairing	Expected Offspring	Risk
Clear x Clear	100% Clear	No risk
Clear x Carrier	50% Clear, 50% Carrier	Safe — no affected puppies
Carrier x Carrier	25% Clear, 50% Carrier, 25% Affected	High risk — avoid
Clear x Affected	100% Carrier	No affected puppies, all carriers
Carrier x Affected	50% Carrier, 50% Affected	Never breed this pairing

Do not eliminate carriers from your breeding program. This is one of the most important principles in modern breeding genetics. Breeding only clear dogs for every condition rapidly shrinks the gene pool, increases inbreeding coefficients, and raises the probability that new, untested recessive diseases will emerge. Instead, breed carriers of outstanding overall quality to clear mates. Every puppy will be healthy, and you preserve the genetic diversity your breed needs to survive.

COI: The Number That Ties Everything Together

The Coefficient of Inbreeding measures the probability that a dog inherited two identical copies of a gene from a common ancestor appearing on both sides of the pedigree. It indicates what fraction of a dog's genes are homozygous — identical from both parents.

Target COI Ranges

• Below 5% — Ideal for health outcomes
• 5–10% — Modest detrimental effects begin appearing
• Above 10% — "Extinction vortex" territory with significant health risks
• 6.25% — Genetic equivalent of a first-cousin mating
• 12.5% — Equivalent of grandfather-granddaughter or half-sibling pairing
• 25% — Equivalent of full sibling or parent-offspring pairing

Pedigree COI vs. Genomic COI

Traditional pedigree-based COI calculations require 8–10 generations minimum and 20+ generations for accuracy. Fewer generations artificially lowers the number because it misses shared ancestors further back.

Genomic COI — calculated from actual DNA data by services like Embark — is significantly more accurate. It measures real stretches of homozygosity across the genome rather than relying on pedigree assumptions.

Why COI Matters Even with DNA Health Testing

DNA panels only identify known mutations. Dogs carry many unknown recessive mutations that have not yet been characterized. High COI increases the chance that these unknown mutations become homozygous and express as disease in offspring. Keeping COI low is your insurance policy against conditions science has not yet identified.

The CAER Eye Exam: Annual and Non-Negotiable

The Companion Animal Eye Registry exam is one of the few health evaluations that must be repeated annually, because eye conditions can develop at any stage of a dog's life.

Only board-certified veterinary ophthalmologists (ACVO Diplomates) can perform CAER exams. The exam consists of indirect ophthalmoscopy and slit lamp biomicroscopy. Your dog will be dilated — expect dilation to last 6–8 hours after the visit.

CAER exams cost $45–$100+ depending on the ophthalmologist, plus a $15 OFA filing fee. Certification is valid for 12 months from the exam date.

This annual requirement catches conditions like progressive retinal atrophy, cataracts, and retinal dysplasia that may not be present during earlier exams. Do not skip annual eye exams on active breeding dogs.

AKC Bred with H.E.A.R.T. Program

AKC's Bred with H.E.A.R.T. (Health, Education, Accountability, Responsibility, Tradition) program is free to join and signals commitment to responsible breeding practices.

Requirements:

1. Registered at least one AKC litter within the past 5 years
2. Health testing per parent club recommendations with proof available on request
3. Complete 4 Continuing Education Units of AKC-approved courses annually
4. Comply with AKC Care and Conditions Policy including inspections
5. Comply with all applicable federal, state, and local laws

Benefits: AKC now displays CHIC numbers on registration documents, increasing visibility of health-tested breeding stock to puppy buyers researching your dogs.

Building Your Health Testing Timeline

Here is a practical timeline for health testing a breeding prospect from puppy to cleared adult:

Age	Tests Available	Why Now
Any age (8+ weeks ideal)	DNA panel (Embark or PPG)	Cheek swab, no age restriction. Get carrier status early to guide decisions.
4 months	OFA hip/elbow preliminaries	Early structural screening. Identifies dogs unlikely to pass at 2 years.
16 weeks	PennHIP	Earliest objective hip laxity measurement. DI remains stable for life.
12 months	Patellas, cardiac, thyroid	Minimum age for OFA certification on these evaluations.
12 months	CAER eye exam	First annual eye evaluation. Begin annual cycle.
24 months	OFA final hips and elbows	Minimum age for permanent OFA certification. This is the milestone.
Annually	CAER eye exam (+ cardiac for some breeds)	Eye conditions can develop at any age. Maintain active certification.

Pro tip: Do not breed before final certifications are complete. Preliminary results are informative but not definitive — especially Fair ratings, which have only 76.9% reliability of remaining normal at two years.

Finding Affordable Health Testing Clinics

Health testing does not have to break the bank. Here is how experienced breeders keep costs manageable:

1. Breed club health clinics — Regional breed clubs and national specialties frequently host discounted health clinics. OFA eye exams at club events can run $30–$50 versus $100+ at a private ophthalmology practice.
2. OFA health clinic directory — Search the OFA website for upcoming health testing events near you. These clinics typically do not sedate dogs, keeping costs lower.
3. Canine Health Testing Clinics directory — Lists 100+ clinics across the country, updated weekly.
4. Bundle your tests — Schedule hips, elbows, patellas, cardiac, and eye exams on the same day at a health clinic. One trip, one sedation (if needed), maximum efficiency.
5. Volume pricing on DNA — Embark's bulk pricing drops to $118 per test for 21+ kits. Paw Print Genetics offers volume discounts starting at just 5 tests.

Sharing Health Results with Puppy Buyers

Today's informed puppy buyers expect to see health clearances before placing a deposit. Making results accessible builds trust and differentiates you from breeders who have something to hide.

• OFA database — All results are publicly searchable. Share your dog's OFA page link directly with buyers.
• Embark — Provides shareable results pages and generates puppy buyer brochures with DNA health summaries.
• Paw Print Genetics — Clear by Parentage certificates ($20/puppy) give buyers documented proof that both parents are clear for tested conditions.
• CHIC reports — A consolidated document listing all tests, dates, and results in one place. The CHIC number also appears on AKC registration documents.

Managing health records across multiple dogs, litters, and testing providers becomes complex fast. Tools like BreedTracker help breeders centralize health clearances, track testing timelines, and share verified results with buyers — keeping everything organized in one place instead of scattered across paper files, email attachments, and multiple databases.

Common Health Testing Mistakes to Avoid

Mistake 1: Confusing DNA testing with OFA clearances. DNA tests screen for known genetic mutations at the molecular level. OFA evaluations assess physical structure through imaging and examination. A dog can pass every DNA test and still have moderate hip dysplasia. Both types of testing are necessary.

Mistake 2: Assuming a CHIC number means a dog passed everything. CHIC certifies that all breed-required tests were completed and made public. It does not certify that results were normal. Always look at the actual results.

Mistake 3: Removing all carriers from the gene pool. Carrier x Clear breedings produce zero affected puppies while preserving genetic diversity. Eliminating every carrier for every condition rapidly shrinks the effective breeding population and creates new problems.

Mistake 4: Skipping annual eye exams. Unlike hip certifications that are permanent, CAER eye certifications expire every 12 months because eye conditions can develop at any stage of life.

Mistake 5: Breeding on preliminary results alone. Preliminary hip evaluations — especially Fair ratings — are not reliable enough to substitute for final certifications. A dog rated Fair on prelims has a 23% chance of not being normal at two years.

Mistake 6: Thinking health testing is too expensive. Budget $800–$2,000 per breeding dog across its career. Compare this to the cost of producing an affected litter: $3,000–$7,000+ per puppy in veterinary care, health guarantee payouts, breeder reputation damage, and heartbreak for families.

Frequently Asked Questions

Is health testing legally required for dog breeders?

No. Health testing is not mandated by law in most jurisdictions. However, it is the universally recognized hallmark of responsible breeding. Breed parent clubs, AKC programs, and reputable breeder directories all require or strongly recommend health testing. Buyers increasingly expect it, and breeders who skip testing face growing difficulty selling puppies at fair prices.

What is the difference between health clearances and DNA testing?

Health clearances are phenotypic evaluations — they assess the physical structure and function of a dog through X-rays, imaging, and hands-on examination. DNA testing is genotypic — it examines the dog's actual genetic code for specific known mutations. A dog can be physically sound (pass OFA) but carry genetic mutations (fail DNA testing), or vice versa. Comprehensive programs use both.

Can I breed a dog that is a carrier for a genetic condition?

Yes, and in many cases you should. Breeding a carrier to a clear mate produces zero affected puppies (50% clear, 50% carriers). Removing every carrier from a breed's gene pool reduces genetic diversity, increases inbreeding, and raises the risk of new genetic diseases emerging. Breed carriers of outstanding quality to clear mates.

How much does a full panel of health testing cost per dog?

Expect $800–$2,000+ per breeding dog depending on breed requirements and whether echocardiograms are needed. This includes OFA hip/elbow X-rays ($300–$600), CAER eye exam ($60–$115), cardiac evaluation ($65–$425), DNA panel ($118–$200), and OFA filing fees. Annual recurring costs for eyes and cardiac add $100–$300 per year.

When should I start health testing a breeding prospect?

Start DNA testing at any age — a cheek swab is all that is needed. OFA preliminary hips and elbows can be done as early as 4 months. PennHIP can be performed at 16 weeks. Cardiac, patellas, and thyroid require 12+ months. Final OFA hip and elbow certifications require the dog to be at least 24 months old.

Are OFA preliminary results reliable enough to breed on?

Preliminary evaluations rated Excellent are 100% reliable. Good ratings are 97.9% reliable. Fair ratings are only 76.9% reliable — meaning nearly one in four dogs rated Fair on prelims will not be rated normal at their final evaluation. Use preliminaries for screening and decision-making, but wait for final certifications before breeding.

Key Takeaways

• Both DNA testing and OFA evaluations are necessary — they measure fundamentally different things and neither replaces the other
• CHIC certification means transparency, not perfection — all required tests completed and made public, not necessarily passing
• Never eliminate carriers from your program — breed carriers to clear mates to preserve genetic diversity while producing healthy puppies
• Budget $800–$2,000 per breeding dog — far less than the cost of producing a single affected litter
• Start early with DNA and preliminaries — but do not breed on preliminary results alone, especially for Fair-rated hips
• CAER eye exams are annual — the only recurring OFA evaluation that cannot be done once and forgotten
• Use breed club clinics and volume pricing — responsible health testing does not require spending more than necessary
• Keep meticulous records — health clearances organized in a centralized system protect you, your buyers, and your breeding program's reputation
• Health testing informs every stage of breeding — results shape your nutrition protocols (breed-specific supplementation needs), whelping preparation (dystocia risk in brachycephalic and toy breeds), and buyer conversations
• Apply health testing to stud selection — for a systematic approach to evaluating stud dog health clearances, pedigree analysis, and breeding decisions, see our stud dog selection guide