How Often Does Your Dog or Cat Need Bloodwork? It Depends on Their Age
Bell Parkway Veterinary Hospital
If your pet seems perfectly healthy, bloodwork can feel like one of those things you should only need when something is wrong.
But that is only part of the story.
Bloodwork can help us investigate illness, but it can also give us a baseline when your pet is healthy, help us monitor changes as they age, and provide useful information before anesthesia.
At Bell Parkway Veterinary Hospital, we do not believe every pet needs the exact same testing schedule. A young, healthy dog and a senior cat with a chronic condition are going to have very different needs.
Here is a practical breakdown by life stage.
First Things First: What Is Pet Bloodwork?
When your veterinarian recommends bloodwork, they may be talking about a few different tests.
A complete blood count checks red blood cells, white blood cells, and platelets. A chemistry panel looks at values related to things like the kidneys, liver, blood sugar, proteins, and electrolytes.
Depending on what is going on with your pet, we may recommend additional testing. That could include thyroid testing, infectious disease screening, or a urinalysis.
Bloodwork is not meant to replace the physical exam. It gives us another piece of the picture.
Puppies and Kittens: Not Every Visit, but Sometimes It Matters
Most healthy puppies and kittens do not need a full blood panel every time they come in.
However, bloodwork may be recommended if your young pet is sick or if we have concerns about their growth, appetite, energy, or digestion.
Another common time is before anesthesia.
If your puppy or kitten is having a spay, neuter, or another procedure, pre-anesthetic bloodwork can help us check for certain issues that are not visible during a physical exam.
Young pets are usually healthy, but “young” does not automatically mean every internal value is normal. Testing gives us more information before we make an anesthesia plan.
Adult Dogs and Cats: Why Baseline Bloodwork Matters
Once pets reach adulthood, preventive bloodwork becomes less about their age and more about building a health history.
Let’s say your dog has normal bloodwork this year and again next year. A few years later, one of those values begins to change. Having previous results gives us something to compare it with.
That trend can be helpful even if your dog is still acting completely normal.
Some healthy adult pets may have bloodwork annually. For others, a different schedule may make sense. We consider age, breed, lifestyle, medical history, and previous results rather than automatically putting every pet on the same plan.
Senior Pets: Time to Pay Closer Attention
This is the life stage when regular bloodwork often becomes more important.
Older pets have a higher chance of developing conditions involving the kidneys, liver, thyroid, blood sugar, or blood cells. Many of those problems can begin quietly.
You may notice that your dog is drinking more water, but otherwise seems fine. Your cat may be losing weight even though their appetite is still good. Your pet may be sleeping more and you assume they are just getting older.
Sometimes they are. Sometimes there is a medical reason.
Bloodwork can help us tell the difference.
Some senior pets may benefit from testing every six to twelve months. Pets with chronic conditions or changing results may need it more often.
And remember, “senior” does not mean the same age for every pet. Larger dogs generally reach their senior years earlier than smaller dogs.
Signs Your Pet May Need Bloodwork Now
A routine schedule is helpful, but symptoms take priority.
If you notice unexplained weight loss, increased thirst, more frequent urination, vomiting, diarrhea, poor appetite, weakness, unusual fatigue, pale gums, collapse, or a major behavior change, give us a call.
Those changes do not automatically mean something serious is wrong. They do mean it may be time to take a closer look.
Bloodwork can help us narrow down the possibilities and decide whether your pet needs additional testing or treatment.
Does Medication Mean More Blood Tests?
Sometimes.
Certain long-term medications need regular monitoring. We may be checking that your pet is tolerating the medication well, that important organ values remain stable, or that the treatment is having the intended effect.
The schedule depends on the medication and the condition being treated.
If we recommend a recheck in a few weeks or months, there is usually a specific reason for that timing.
Why Do We Recommend Bloodwork Before Anesthesia?
A physical exam is important before anesthesia, but it cannot tell us what is happening with every organ or blood value.
Pre-anesthetic bloodwork gives us another layer of information.
If we see something unexpected, we may adjust the anesthesia plan, recommend another test, or postpone an elective procedure until we understand what is going on.
If everything looks good, that information is still valuable and becomes part of your pet’s medical history.
So, What Is the Right Schedule?
The right schedule is the one that fits your pet.
A healthy adult dog may need periodic screening. A senior cat may benefit from more frequent testing. A pet taking medication or living with a chronic condition may need regular rechecks.
At Bell Parkway Veterinary Hospital, we can help Surprise pet owners decide what makes sense based on their pet’s age, health, and history.
If you are wondering whether your pet is due for bloodwork, ask at their next visit. We would much rather help you make a plan that fits your pet than hand you a one-size-fits-all answer.