Many veterinarians recommend routine screening tests as dogs and cats get older. For owners, that can raise questions, especially when a pet seems perfectly fine. Here are answers to some of the most common ones. For specifics about your pet, ask your veterinarian.
Why test a pet that seems healthy?
Pets cannot tell us when they feel unwell, and many, especially cats, hide signs of illness. Some common conditions in older pets develop gradually and may not cause obvious symptoms until they are advanced. Screening tests can help detect changes earlier, when there may be more options for management.
Tests also establish a baseline. Comparing results over time helps your veterinarian see trends that a single test might not reveal.
What tests are commonly part of senior screening?
Exact recommendations vary by pet, but senior screening often includes some combination of:
- Complete blood count (CBC): looks at red blood cells, white blood cells and platelets, which can give clues about anemia, infection or inflammation
- Chemistry panel: measures substances in the blood that give information about organs such as the kidneys and liver, along with blood sugar, proteins and electrolytes
- Urinalysis: checks urine concentration and looks for signs of infection, kidney changes or diabetes
- Thyroid testing: especially common in older cats
- Blood pressure measurement: often recommended for senior cats and some dogs
Your vet may suggest additional tests based on breed, symptoms or exam findings.
How often should senior pets be screened?
Many veterinarians recommend senior wellness exams about twice a year, with screening tests at least once a year. Pets with known conditions may need more frequent monitoring. Ask your veterinarian what schedule makes sense for your pet.
Does my pet need to fast? Sometimes. Certain tests are more accurate if a pet has not eaten for several hours. Your clinic will tell you if fasting is needed. Do not withhold water unless specifically instructed, and ask how to handle medications, especially for diabetic pets.
What if a result is slightly abnormal?
A single slightly abnormal value does not always mean disease. Results can be affected by stress, hydration, recent meals and normal individual variation. Your veterinarian may recommend repeating a test, running additional tests or monitoring over time. Ask what a result might mean and what the next step is.
How can I make the most of the results?
Ask for a copy of each set of results and keep them with your pet’s records. Ask your veterinarian to walk you through anything flagged as high or low and to explain how it compares to previous results. If cost is a concern, say so. Your vet may be able to help you prioritize the most important tests.
Screening is not about expecting bad news. It is about having information, so you and your veterinarian can make good decisions together as your pet ages.
