What is a fecal float test?

A fecal float test is a routine diagnostic tool veterinarians use to identify internal parasites in dogs, cats, and other pets. The procedure involves collecting a fresh stool sample, mixing it with a special flotation solution (usually a sugar or salt solution), and allowing parasite eggs to rise to the surface. A microscopic slide is then prepared from this floating material and examined under magnification to identify eggs, cysts, or oocysts of common parasites.

The test catches infections from parasites like roundworms, hookworms, whipworms, coccidia, and giardia. These organisms can cause weight loss, diarrhea, poor coat condition, or more serious health problems if left untreated. A negative result on one test does not always rule out infection, since parasites shed eggs inconsistently. Multiple samples collected on different days or repeated testing may be necessary for a confident diagnosis.

Denver veterinarians typically recommend fecal float testing during annual wellness visits and whenever a pet shows signs of intestinal parasites. Puppies and kittens often require multiple tests during their first months. Regular testing is especially important for pets with outdoor access, those in contact with other animals, or if a household member has a compromised immune system. Finding parasites early through screening allows prompt treatment and prevents spread to other pets or people. A local veterinary provider can perform this test and recommend appropriate parasite prevention.