Maine Coon DNA test — verify breed without papers

Pet DNA tests for cats have improved a lot over the last few years, so you're in a reasonable position here. The honest picture: cat DNA testing can confirm breed composition with decent accuracy — including Maine Coon ancestry — and the better kits also screen for genetic health conditions that are worth knowing about in this breed specifically. That said, no DNA test is a substitute for your vet, and 'breed confirmation' from a consumer test won't carry the same weight as official pedigree paperwork for registration purposes. Before I point you in the right direction — is your main goal to confirm she's genuinely Maine Coon, or are you also interested in the health side of things, like HCM or polycystic kidney disease screening?

Yes, HCM — hypertrophic cardiomyopathy — is the big one with Maine Coons, and there's a known genetic variant (MYBPC3) that significantly raises risk. A good DNA test will flag whether she carries that mutation, which is genuinely useful information to have at four months old before any issues would show clinically. Can I ask — do you know if either of the parents had HCM screening done? And is she showing any physical traits that make you feel confident about the Maine Coon side — the ear tufts, bone structure, that sort of thing?

That physical profile does sound convincing, but it's completely reasonable to want the genetic confirmation, especially given the HCM risk. For cats, the test I'd point you to is the Basepaws Breed + Health DNA Test. It covers over 25 cat breeds in its breed analysis including Maine Coon specifically, and it screens for over 40 genetic health conditions — HCM and PKD included, which are the two that matter most for your situation. The process is a cheek swab you do at home, results come in a few weeks, and the report is clear enough to take to your vet and have a proper conversation about what the health markers mean. It won't restore your registration paperwork, but it will tell you her genetic make-up and whether she carries any of the variants worth monitoring. At four months she's a perfectly good age to test — no need to wait.

It gives you breed percentages, so you might see something like '92% Maine Coon' rather than a binary yes or no — which is actually more informative. A purebred cat from a reputable breeder will typically come back very high on one breed. If she comes back 85–95% Maine Coon that's a strong confirmation. If it comes back 50% or lower, that tells you something different about her background. The health section is more definitive — each condition is reported as clear, carrier, or at risk. That's the part worth discussing with your vet. The Basepaws kit on Amazon UK is straightforward to order and the swab process is easy with a kitten.