Responsible Breeding
DNA Test Before You Breed
French Bulldog health screening explained: why testing for DM, HUU, JHC, and CMR1 is the most important decision you make before producing a litter.
Start ScreeningWhy DNA Health Testing Is Non-Negotiable
French Bulldogs are one of the most genetically vulnerable dog breeds. Their brachycephalic structure, compact body, and closed gene pool make them prone to a range of heritable conditions that responsible breeders can and should prevent.
The four major health genes — DM, HUU, JHC, and CMR1 — are all recessive traits. This means no puppy will be affected unless both parents contribute a mutated copy. If you know the genotype of both your sire and dam, you can guarantee that your litter will be free of these diseases.
Testing is not just about protecting puppies. It is about protecting your reputation, your buyers' trust, and the long-term health of the French Bulldog breed. A breeder who produces affected puppies faces refunds, legal liability, and permanent damage to their standing in the community.
The Four Genes Every Breeder Must Test
These four genes account for the most common preventable hereditary diseases in French Bulldogs. Testing for all of them should be standard practice before any breeding.
SOD1Degenerative Myelopathy (DM)
Progressive paralysis in older dogs. No cure. Incurable.
Never breed two carriers together.
SLC2A9Hyperuricosuria (HUU)
Painful bladder and kidney stones. Requires lifelong management.
Never breed two carriers together.
HSF4Juvenile Hereditary Cataracts (JHC)
Clouded lens leading to blindness. Expensive surgery required.
Never breed two carriers together.
BEST1Canine Multifocal Retinopathy (CMR1)
Retinal lesions causing vision impairment. No treatment available.
Never breed two carriers together.
How to DNA Test Your Frenchie
Order a Health Panel
Choose Embark, Animal Genetics, or DDC. Order the full French Bulldog health and color panel for both your sire and dam.
Collect & Send Samples
Collect cheek swabs from both dogs following the kit instructions. Mail samples back in the prepaid envelope. Results arrive in 2–4 weeks.
Run the DNA Calculator
Enter both dogs' genotypes into our free DNA Calculator. Instantly see every health risk, color probability, and whether your pairing is safe.
Recommended DNA Test Providers
Embark
~$199
Panel: Health + Color + Traits
Turnaround: 2–3 weeks
Most comprehensive panel. Tests 250+ health conditions.
Animal Genetics
~$150
Panel: Health + Color
Turnaround: 2–4 weeks
Breed-specific panels available. Fast turnaround.
DDC Veterinary
~$175
Panel: Health + Color
Turnaround: 2–3 weeks
Trusted by breeders worldwide. Excellent customer support.
Test Your Frenchies. Then Calculate.
DNA testing tells you what your dogs carry. Our DNA Calculator tells you what happens when you breed them. Together, they guarantee healthy, ethical litters.
Open the DNA CalculatorFrequently Asked Questions
Why should I DNA test my French Bulldog before breeding?
DNA testing before breeding is the only way to know which genetic diseases your dog carries. French Bulldogs are prone to several heritable conditions — DM, HUU, JHC, and CMR1 — that are 100% preventable through informed breeding choices. Testing protects your puppies, your reputation, and your buyers' trust.
Which health genes should every Frenchie breeder test?
Every French Bulldog used for breeding should be tested for four major health genes: SOD1 (Degenerative Myelopathy), SLC2A9 (Hyperuricosuria), HSF4 (Juvenile Hereditary Cataracts), and BEST1 (Canine Multifocal Retinopathy). These four genes cover the most common preventable hereditary diseases in the breed.
How much does French Bulldog DNA health testing cost?
A comprehensive health panel from Embark costs approximately $199 and includes all four major health genes plus color genes. Animal Genetics and DDC offer similar panels in the $150 to $200 range. This is a small investment compared to the cost of treating affected puppies or the reputational damage of producing sick litters.
Can I test just one parent and assume the puppies are safe?
No. Recessive diseases require two mutated copies to affect a puppy — one from each parent. Testing only one dog leaves a dangerous blind spot. You must test both the sire and dam, then use a DNA Calculator to analyze the pairing and confirm no affected puppies can be produced.
When should I DNA test my Frenchie?
Test before any breeding decision. The ideal time is when your dog is 6 to 12 months old — old enough to be considered for breeding but early enough to inform your long-term breeding plan. Results are valid for life, so you only need to test once.
What do I do if my Frenchie is a carrier for a health gene?
Being a carrier is not a reason to remove a dog from your breeding program. Simply pair carriers only with clear (N/N) partners. The DNA Calculator shows you exactly which pairings are safe and which are not. Carriers bred to clear dogs never produce affected puppies.