Feline leukemia virus is spread through the saliva of the infected cat by sharing food or water dishes or when cats groom, play with, or bite each other. Since the signs and symptoms of FeLV can be like other medical conditions, the best way to diagnose it is to see your veterinarian immediately.
As a cat owner, it is important to be aware of the signs and symptoms of feline leukemia so that you can seek treatment for your furry friend as soon as possible. There are several ways to tell if a cat has feline leukemia. One of the most common signs is persistent lethargy and weakness. This guide provides a clear, vet-reviewed overview of both early and advanced FeLV signs in cats, empowering you to recognize potential warning signs and take appropriate action for your feline companions health. Learn about the veterinary topic of White Blood Cell Disorders, Leukemia, and Lymphoma of Cats. Find specific details on this topic and related topics from the MSD Vet Manual.

This guide provides a clear, vet-reviewed overview of both early and advanced FeLV signs in cats, empowering you to recognize potential warning signs and take appropriate action for your feline companions health.

Two types of blood tests commonly used to diagnose FeLV detect a protein component of the virus called FeLV P27. One of these tests, called an enzyme-linked immunosorbent assay (ELISA), is usually performed first as a screening tool, and can be run in a veterinarian's office.