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Health Testing Guide
Which tests are mandatory, how to spot responsible breeders — and what it costs when things go wrong.
For the Staffordshire Bull Terrier we've compiled 4 tests required by Deutscher Club für Bullterrier e.V. and 12 additionally recommended tests, drawn from breed-club regulations, the University of PEI (CIDD), and OMIA — weighted by severity and heritability.
View verified breedersWhat this grade means
In the Staffordshire Bull Terrier, breed-typical conditions primarily include joint disorders such as hip dysplasia (HD) and elbow dysplasia (ED), heart diseases, and the hereditary metabolic disorder L-2-hydroxyglutaric aciduria (L-2-HGA). For breeding approval, the Deutscher Club für Bullterrier e.V. mandates X-ray examinations for HD (limit HD A–B) and ED (limit ED 0–1), a cardiac examination (grade 0–1), and a genetic test for L-2-HGA; carriers may only be mated with clear dogs. Responsible breeders additionally test for hereditary eye diseases such as primary lens luxation (PLL) or cataract, as well as for familial nephropathy (FN). Before buying a puppy, make sure you are presented with the complete, official results of both parents for joints, heart, and genes.
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. For the Staffordshire Bull Terrier, Deutscher Club für Bullterrier e.V. requires 4 tests for breeding approval, plus 12 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 12 additional clinically recommended screenings that reduce risk in this breed.
In addition to Good:
Cryptorchidism
Andere
Cryptorchidism is a developmental condition of the male reproductive system where one or both testicles fail to descend normally into the scrotum. Instead, the undescended testicle remains trapped inside the abdomen or in the groin area. This failure to descend is a physical development issue rather than an active illness, but it alters how the reproductive organs develop.
Physical examination · Passing: no testicular defects
Congenital blindness
Augen
Congenital blindness is a severe or complete loss of vision present from birth, affecting the eyes and the neural pathways connected to the brain. It is caused by developmental abnormalities in key structures like the retina, which is the light-sensitive tissue at the back of the eye, or the optic nerve. These structural defects prevent visual signals from being properly formed or transmitted.
Physical examination · Passing: clear
Ectropion / Entropion
Augen
These are structural eyelid abnormalities affecting a dog's eyes. In cases of entropion, the eyelid rolls inward, causing the eyelashes or fur to rub painfully against the surface of the eyeball. In ectropion, the eyelid sags or rolls outward, leaving the sensitive inner lining of the eye exposed and unprotected.
Passing: clear
Cataract(HC)
Augen
A cataract is a progressive clouding of the lens inside the dog's eye, which is the clear structure that focuses light onto the retina at the back of the eye. When the lens becomes cloudy or opaque, it blocks light from entering, gradually impairing the dog's vision. If left untreated, this condition can eventually lead to complete blindness in the affected eye.
Eye examination · Passing: clear or carrier
Lens luxation(PLL)
Augen
Lens luxation is an inherited eye disorder where the lens slips out of its normal position because the supporting fibers holding it in place weaken or break. When the lens shifts, it can block the natural drainage of fluid within the eye. This blockage causes a rapid, painful buildup of pressure called glaucoma, which can lead to permanent blindness if left untreated.
Eye examination · Passing: clear
Persistent Hyperplastic Tunica Vasculosa Lentis (PHTVL) and Persistent Hyperplastic Primary Vitreous (PHPV)(PHTVL/PHPL)
Augen
This is a congenital eye disorder where the temporary blood vessel network that nourishes the lens before birth fails to shrink and disappear as it normally should. Instead, this embryonic tissue remains and grows abnormally behind and around the lens. This can cause cloudiness in the lens, known as cataracts, and other structural changes inside the eye.
Eye examination · Passing: clear
Primary Open-Angle Glaucoma(POAG)
Augen
Primary open-angle glaucoma is an inherited eye disease where the natural fluid inside the eye cannot drain properly. This fluid buildup causes a gradual increase in pressure within the eyeball, which eventually damages the optic nerve, the connection between the eye and the brain. Without management, this pressure leads to permanent blindness.
Eye examination · Passing: clear
Progressive Retinal Atrophy (PRA)(PRA)
Augen
Progressive Retinal Atrophy (PRA) is an inherited eye disease that affects the retina, which is the light-sensitive layer of tissue at the back of the eye. In this condition, the specialized cells responsible for detecting light, known as photoreceptors, gradually degenerate and die. Because these cells cannot recover or be replaced, the disease slowly but inevitably leads to complete blindness.
Passing: clear
Demodicosis / Demodectic mange
Haut und Fell
Demodicosis is a skin disease caused by an overgrowth of microscopic Demodex mites that naturally live inside a dog's hair follicles. While these mites are normally harmless, an inherited or acquired weakness in the immune system can allow them to multiply uncontrollably. This overgrowth leads to inflammation and damage to the skin barrier.
Skin test · Passing: no demodicosis
Congenital deafness(CHSD)
Nervensystem
Congenital deafness is a hereditary hearing loss present from birth that affects the inner ear's sensory cells, preventing sound signals from reaching the brain. It is usually genetic, occurs more often in certain breeds and is frequently linked to coat patterns such as merle or piebald.
Physical examination · Passing: hearing in both ears
Deafness
Nervensystem
Deafness is a partial or complete loss of hearing that affects the nervous system and auditory pathways. It is often hereditary and frequently linked to specific coat pigmentation genes, such as the merle or piebald genes, which can affect the development of the inner ear. This genetic form of deafness results from a lack of pigment cells in the inner ear, leading to the degeneration of vital sensory cells.
Hearing test · Passing: hearing in both ears
Familial Nephropathy(FN)
Nieren
Familial Nephropathy (FN) is an inherited kidney disease caused by a genetic defect in collagen, which is a vital structural protein. This defect damages the kidneys' filtering units, preventing them from properly removing waste products from the blood. Over time, this leads to progressive and irreversible kidney failure.
Body-fluid analysis · Passing: Nierenultraschall-Befund
Not health tests, but required for breeding: the club asks for these results too. They don't count toward the risks or the rating.
D-Locus (d1) (D-Lokus)
Required by Deutscher Club für Bullterrier e.V.
Acceptable result: result on file
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 — Elbow Dysplasia
Both parents must be ED 0–1 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.
Not across the board. But these traits can play a role in the Staffordshire Bull Terrier: Flat face. Depending on the line, color or pairing, that is an extreme-breeding risk – what to look out for is explained on the linked pages.
Self-check
Answer 6 quick questions about your everyday life and see how well the Staffordshire Bull Terrier 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.
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