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Senior dogs

Should I get blood tests for my healthy older dog?

Last updated 23 September 2026 · How we write and check this

Short answer

Yes, most vets recommend annual or twice-yearly bloodwork for senior dogs even when nothing seems wrong, because many organ and metabolic changes develop quietly before any visible symptom appears. Establishing a baseline while your dog is healthy also makes any future test far more useful for comparison. The test itself is quick, usually just a blood draw during a routine visit lasting a few minutes.

Why testing before symptoms appear matters

Kidney and liver values, for example, often only show clear abnormalities on standard bloodwork once a significant portion of function is already affected. Catching a gradual shift early, while it is still mild, gives far more room to manage it than waiting until a dog shows outward symptoms like increased thirst or reduced appetite, by which point more of that function may already be affected.

The value of a baseline

A single blood test read in isolation only shows whether a value falls inside a broad reference range. A second or third test compared against your dog's own earlier results can reveal a meaningful upward or downward trend even while every number technically remains within normal limits, which is often the most useful thing bloodwork reveals in a healthy senior dog over several years of visits.

What it typically involves

A standard senior panel includes a complete blood count and a chemistry panel checking organ function, often alongside a urine sample. Most dogs tolerate the process well, and results are usually available within a day or two.

Cost varies by clinic, but many practices offer a bundled senior panel that works out cheaper than ordering the same tests individually. Ask your vet directly about this option rather than assuming a full panel is always the pricier route, since bundled pricing can be a genuine saving.

Key takeaways

  • Bloodwork can catch organ or metabolic changes well before visible symptoms appear.
  • A baseline test while your dog is healthy makes future comparisons more meaningful.
  • Trends across multiple tests often matter more than a single result.
  • A standard senior panel includes blood count, chemistry values, and often a urine sample.