Key Takeaways
- Testing for both feline leukemia and FIV is done with a single simple blood draw, with results available nearly immediately in the clinic.
- Most cats are recommended for at least one combined FeLV and FIV test in their lifetime, with more frequent testing for cats that go outside or have exposure risk.
- Neither disease has a cure, making early detection and risk reduction the most important tools available for protecting your cat.
Feline leukemia and FIV don't always come up in casual conversation about cat health, but they're two of the more serious conditions cats can face. Both are contagious, both are incurable, and catching them early makes a meaningful difference in how they're managed. Here's what every cat owner should know.
What Is Feline Leukemia?
Feline leukemia virus, or FeLV, is a viral disease transmitted from cat to cat through close contact. Despite its name, it doesn't always present as leukemia in the traditional sense, but it can cause blood cancers and significantly compromises a cat's immune system over time, leaving them vulnerable to a range of secondary illnesses.
There is no cure for feline leukemia. Once a cat is infected, they carry the virus for life. That's why early detection through routine testing matters so much, especially for cats with any exposure to other animals.
What Is FIV?
Feline immunodeficiency virus, or FIV, attacks a cat's immune system, making it harder for them to fight off infections and illness over time. It's most commonly transmitted through bite wounds, which is why cats that go outdoors or have contact with unfamiliar cats are at the highest risk.
Like feline leukemia, FIV has no cure. Cats that test positive can live for years with proper management, but their long-term health is more vulnerable. There is currently no widely recommended vaccine for FIV, which makes testing and minimizing exposure the primary tools for protecting your cat.
How are FeLV and FIV Transmitted?
Both FeLV and FIV spread through contact between cats, though the routes differ slightly. Feline leukemia spreads through mutual grooming, shared food and water bowls, and close social contact. FIV is most commonly passed through bite wounds.
Cats that go outdoors or have regular contact with cats outside the household are at the highest risk for both diseases. Indoor-only cats with no exposure to other cats are at much lower risk, though testing is still recommended at least once in a cat's lifetime.
Which Cats Should Be Tested?
Most cats are recommended for at least one combined FeLV and FIV test during their lifetime. Cats with outdoor access or ongoing exposure to other cats may be recommended for more frequent testing based on their risk level.
Testing is especially important for newly adopted cats, cats whose history is unknown, and kittens before their vaccination series begins. If your cat hasn't been tested before or their status is overdue, it's worth bringing up at their next wellness visit.
What Does FeLV and FIV Testing Involve?
Testing for both feline leukemia and FIV is done with a single simple blood draw. The test can be run right in our clinics, and results are typically available nearly immediately. No waiting on an outside lab.
If your cat tests positive for either disease, your vet will walk you through what that means for their care and what to monitor going forward. Modern Animal All Access and Essential members can also follow up with questions anytime through 24/7 Virtual Care.
What Does FeLV and FIV Testing Cost?
Testing costs vary depending on where you live. The combined FeLV and FIV test is typically run as part of a wellness visit, and the overall cost can be influenced by your cat's age, health history, and what else is recommended at that appointment.
For a full breakdown of service and test pricing at Modern Animal, visit modernanimal.com/pricing. Everything is listed transparently so you know what to expect before you come in.
Know Your Cat's Status
Testing for feline leukemia and FIV is one of the simplest things you can do to stay ahead of your cat's health. If your cat hasn't been tested or is due for a recheck, book an appointment through the Modern Animal app. And if questions come up before then, our team is available around the clock through virtual care.
