06/08/2025
Hi! Couldn’t seem to find a worthy topic for Science Sunday last week, so rested my typing fingers. BTW, if you have a topic you would like discussed, please suggest it here and I will do my best to bring the facts of the topic to light.
I have many folks at my practice ask me, ‘Why should we pull blood yearly on my pet?’ Let’s look at the benefits for the dog first.
Your dog should be on heartworm preventative monthly to prevent heartworms and internal parasites. But, no medicine is 100% effective. If we can show that your pet has been heartworm tested yearly and you have bought preventative on a yearly basis then, if your pet becomes heartworm positive or GI parasite positive, the manufacturer of your heartworm preventative will pay for testing and treatment which roughly amounts to $100 for GI parasites and $400 to $1000 for heartworms. At my practice, a yearly heartworm test checks for not only heartworms, but common tick borne diseases like ehrlichia, lyme & anaplasmosis.
A yearly blood panel at my hospital tests for the above, but also contains a chemistry which checks in on the liver, kidneys, blood sugar, electrolytes and proteins; a Complete Blood Count (CBC) which checks white blood cells, red blood cells & platelets; a thyroid test and lastly a f***l exam to check for GI parasites. Remember, no medicine is 100% effective.
A case in point. Recently, a 5yo lab came in for his yearly exam. Healthy as per the owner and the gross physical exam. Blood was obtained and the results revealed a marked increase in his red and white blood cell lines. Leukemia and lymphoma came immediately to mind. Sent him for an ultrasound and found lymphoma that had already metastasized. He began to decline and was euthanized a month later.
Another pup was seen in March for her annual exam. Blood was taken and results were completely normal. In May, she began drinking more and urinating more. We rechecked her bloodwork and found her to be diabetic. She is doing well on daily insulin.
An internal change can happen at any moment. Some, if caught early before outward clinical signs are noted, have an increased chance of being treated successfully. Catching kidney disease early may mean a change of diet and possibly medicines or supplements that can slow the progression. Increased liver enzymes can prompt us to order an ultrasound which might find Cushings (which is managed with a daily med), age related changes (which can be managed with daily supplements for liver support) or a cancerous process (which may be treated with chemo or more natural remedies to slow the progression).
The bottom line is, if we don’t know a condition exists, we can’t attempt to manage it. The quicker we know a condition exists, the better our chances of maintaining a good quality of life for your pet.
In cats, yearly blood work has become extremely meaningful with the introduction of a newer test; CardiacProBNP. This test is similar to the test that a hospital would run on you if they suspect you may have had a heart attack. Along with a thyroid test and kidney values, yearly blood work addresses the three most common problems in a cats; heart disease, kidney disease and hyperthyroidism.
While many dogs give you a heart murmur to alert you to a condition that needs further work-up, cats rarely give you a clue. This test has allowed me to diagnose heart disease in very early stages and medicate as needed to help cats maintain a good quality of life. If your vet currently does not include this test in their yearly cat blood panels, please ask for it.
Again, if you have a topic you would like to see discussed, please let me know. Happy Sunday!