How often should a breeding Maine Coon be echoed?

Short answer: repeatedly, on a schedule — because an echo describes the heart on the day it was taken. HCM is progressive and late-onset; a cat can screen normal at two and abnormal at five. That is why the established screening programmes treat echoes as periodic, and why a five-year-old result tells you about a cat that no longer exists.

Why one clear echo is not a clean bill

An echocardiogram measures the heart muscle as it is at that moment. Nothing about a normal result at age two says anything about age six. This is the single most common misreading of a health-testing sheet: treating a dated snapshot as a permanent certificate.

The PawPeds health programmes exist precisely because a one-off result is not enough — results are recorded over time so a line can be judged on its history rather than a single good day.

What to look for on the document

Three things decide whether an echo result is meaningful:

• The date. Recent matters. An undated result is not a result.
• Who read it. An echocardiogram should be performed and interpreted by a board-certified veterinary cardiologist — you can look up a specialist by name and location. A general-practice ultrasound is not equivalent.
• Which cat. The document should name the individual animal, ideally with a microchip number.

“Vet checked” is not heart screening

A wellness exam and a stethoscope do not detect early HCM. A murmur may be absent in an affected cat and present in a healthy one. If a breeder offers “vet checked” in place of a cardiologist echo, they have done the easy thing and skipped the hard one — a point we make in full in the two-test explainer.

What to ask for

Ask for the most recent echo on both parents, with the date and the cardiologist’s name, plus their A31P DNA results. Both, not either — here is why a clear DNA result doesn’t substitute.