Health testing for cat breeders: what papers prove, what they don’t, and what buyers ask to see

What registration papers actually prove

Registration with TICA, CFA, GCCF or any other body records that a cat descends from registered parents of that breed. That is the whole of it. It is a genealogical record, not a health certificate, and no registry inspects the cat before issuing it.

This gets conflated constantly, and not because buyers are careless — the phrase "papered kitten" sounds like a quality guarantee, so people reasonably assume it covers health. It does not. A fully registered kitten from a five-generation pedigree can carry exactly the same hereditary risks as an unregistered one if nobody screened the parents.

What papers genuinely give you is different and still valuable: a traceable ancestry, which is what makes inbreeding coefficients calculable and lets you see whether the same ancestor keeps reappearing. Ancestry is the input to a health decision, not the decision itself.

DNA test and echocardiogram answer different questions

This is the distinction most worth internalising, because getting it wrong leads breeders to stop screening.

A DNA test asks: does this cat carry one specific known mutation? It is a one-off, it never changes, and it is cheap. An echocardiogram asks: what does this heart look like right now? It reflects the cat’s current state, and because heart disease develops over time, a clear scan at two years old says nothing certain about age six.

In Maine Coons the gap between these two is stark. Studies have found hypertrophic cardiomyopathy in cats that test negative for the MYBPC3 A31P mutation at a rate broadly comparable to cats carrying it — meaning A31P is not the sole cause of HCM in the breed, and more mutations remain unidentified. A clear DNA result is therefore reassuring about one pathway and silent about the rest. The practical consequence: cardiac ultrasound screening continues regardless of DNA status, and is repeated periodically rather than done once.

The same logic applies elsewhere. A cat clear for PKD1 can still develop kidney disease from other causes as it ages. Genetic testing narrows risk; it does not eliminate it.

Which screening applies to which breed

Confirm current recommendations with your own vet and registry — breed panels are revised as research advances, and this table covers only the tests most consistently cited.

What buyers are actually asking for now

• The parents’ results, not the kitten’s — hereditary screening happens a generation up, and buyers have learned to ask this.
• Dates on the reports. An echo from four years ago tells a buyer less than one from this season, and a sophisticated buyer knows it.
• The scanning vet or laboratory named on the document, rather than a screenshot of a result with no provenance.
• Registration and health screening presented as two separate things. Handing over papers when asked about health reads as evasion, even when it is not meant that way.
• Increasingly, the COI for the specific pairing — buyers who have read about inbreeding depression now ask for the number.

Keeping the documents findable, not just filed

The screening is the expensive part; the failure is usually administrative. Reports live in an email attachment from two years ago, a photo in a camera roll, a paper folder in a cupboard — and when a buyer asks on a Sunday evening, they cannot be produced. That looks identical to not having them.

What works is attaching each report to the individual cat rather than to a date or a folder, so that "show me the mother’s heart scan" is a two-tap answer instead of an archaeology project. Echo results need a repeat date attached as well, because the value of the screening decays and nobody remembers on their own that a scan is due.

This is unglamorous and it is what separates a breeder who screens from a breeder who can prove they screen. To a buyer deciding between two catteries, those look like very different programmes.