Which simple test can be used to check for heartworm in dogs?

The antigen test specifically designed for detection of heartworm in dogs is the most widely used and effective method. This test works by identifying proteins (antigens) released into the dog's bloodstream by adult female heartworms. Since this type of test is relatively simple, quick, and provides reliable results, it is often the choice of veterinarians when assessing for heartworm infection in dogs.

While other methods may be used in the diagnostic process, such as blood tests that measure different parameters or imaging techniques like X-rays and ultrasounds to assess the heart and lungs, these are not direct indicators of heartworm presence. Blood tests may encompass a broader range of functions and cannot solely confirm heartworm infection, while X-rays and ultrasounds are used for evaluating the physical effects of heartworm disease rather than its presence. Therefore, the antigen test specifically targets the heartworm lifecycle to give a clear and direct indication of infection.