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Health Testing Guide
Which tests matter, how to spot responsible breeders — and what it costs when things go wrong.
For the Norwegian Lundehund we've compiled 13 tests in the recommended health standard and 3 additionally recommended tests, drawn from veterinary databases such as CIDD (University of PEI) and OMIA — weighted by severity and heritability.
View verified breedersWhat this grade means
In the Norwegian Lundehund, there are clear breed-specific health risks, which primarily include severe eye diseases such as primary lens luxation (PLL), cataract, and progressive retinal atrophy, as well as joint problems like patellar luxation (PL). A responsible breeder therefore has their breeding animals undergo comprehensive ophthalmological examinations and tests for joint dysplasias. Before buying, ask to see proof of freedom from primary lens luxation (PLL), cataract, and progressive retinal atrophy, as well as a patellar luxation result with the limit value PL 0 and an HD X-ray evaluation of HD A–C.
Every breed is susceptible to certain inherited conditions. Just like humans, dogs inherit predispositions from their parents. Responsible breeders screen their breeding dogs for these conditions and make informed mating decisions to reduce the risk passed on to puppies.
No — but it's the strongest tool we have. Diet, exercise, environment, and genetics all contribute to whether a dog develops a condition. When breeders use the right tests to identify risk in potential parents, the likelihood of many conditions appearing in the puppies drops significantly.
There's no one-size-fits-all here. The recommended health standard for the Norwegian Lundehund covers 13 tests, plus 3 additional recommended tests. The specific tests and passing thresholds are detailed further below.
Keep in mind
Reliable screening tests still don't exist for many hereditary conditions, and tests for complex polygenic conditions don't always predict severity in the puppies. Even so, they're a powerful tool of responsible breeding.
There are two main types of health tests:
Screen the dog's DNA for known disease-causing mutations. Can be performed from puppyhood and give a binary result (clear / carrier / affected).
Clinical and imaging exams like X-ray, ultrasound, or ophthalmoscopy. They show how a predisposition actually manifests — usually only conclusive after 12–18 months.
We group breeding programs into three levels based on testing depth. Ask your breeder directly which level they meet.
A breeder at the Great level meets the Good level and performs 3 additional clinically recommended screenings that reduce risk in this breed.
In addition to Good:
Eye conditions (ophthalmological eye exam)(ECVO)
Augen
This refers to a variety of hereditary eye conditions affecting the structures of the eye, such as the lens, retina, or eyelids. An ophthalmological eye exam is a specialized clinical screening used to detect these genetic defects, which include cataracts (clouding of the lens) or progressive retinal atrophy (gradual degeneration of the light-sensitive retina). Early detection through these screenings helps identify issues before they cause permanent vision loss or chronic pain.
Eye examination · Passing: clear
Hip dysplasia(HD)
Bewegungsapparat
Hip dysplasia is an inherited skeletal disorder where the ball and socket of the hip joint do not fit together properly. Instead of sliding smoothly, the bones rub and grind against each other, wearing down the protective cartilage. Over time, this chronic friction causes joint instability, painful inflammation, and progressive arthritis, which is the gradual wear and tear of the joint.
X-ray · Passing: HD A–C
Lundehund Syndrome (Norwegian Lundehund)(LS)
Stoffwechsel
Lundehund syndrome is an inherited gastrointestinal disease caused by an autosomal-recessive genetic mutation. It leads to chronic inflammation of the intestinal lining, which prevents the body from properly absorbing nutrients. This inflammation causes a condition called protein-losing enteropathy, where essential proteins leak out of the bloodstream and into the digestive tract.
DNA test
These levels are a comparison framework, not an official certification. They help compare breeding programs at a glance.
A complete checklist with every core-standard and additionally recommended test, plus identity and rearing questions — take it with you.
Open the full checklistFor breeders
Machine-readable mating rules, minimum ages, scoring schemes, and what's required for HonestDog verification — as a printable guide.
Example rule — Distichiasis
Both parents must be clear or better.
We take mandatory tests from official breed regulations, build the recommended health standard from veterinary databases — and cross-check every uploaded certificate against the dog's profile using AI.
L1 = core standard: the club's required tests where its rules set them, otherwise the recommended health standard for the breed. L2 = additionally recommended or clinically indicated. L3 = lower prevalence. Every assignment carries a source and confidence rating.
VDH breeding regulations, CIDD (University of PEI), OMIA (University of Sydney), curated veterinary input.
Uploaded certificates are read by AI and checked for date, result, and consistency with the dog's profile — our team reviews anything inconclusive.
These hereditary conditions are currently classified as most relevant for the Norwegian Lundehund: Distichiasis, Ectropion / Entropion, Corneal dystrophy (CD), Cataract (HC), Lens luxation (PLL), Optic nerve hypoplasia and micropapilla (ONH), Pectinate ligament dysplasia (PLD), Persistent Hyperplastic Tunica Vasculosa Lentis (PHTVL) and Persistent Hyperplastic Primary Vitreous (PHPV) (PHTVL/PHPL), Persistent pupillary membranes (PPM) (PPM), Primary Open-Angle Glaucoma (POAG), Progressive Retinal Atrophy (PRA) (PRA), Retinal Dysplasia (RD), Patellar Luxation (PL). The risk for a puppy depends primarily on whether both parents have been tested for these conditions and whether the results fall within breed-specific requirements.
Self-check
Answer 6 quick questions about your everyday life and see how well the Norwegian Lundehund fits you — including an honest cost estimate per month, per year, and across the dog's lifetime.
See breeders who have already uploaded their health test results for verification.
View verified breeders