The Pulse Of Veterinary Medicine

Vet-To-Vet Conversation With IDEXX

Hook ’em, round ’em, whip ’em: Detect more, detect earlier with Fecal Dx testing

Innovations in veterinary medicine continue to make it easier to provide patients with an increasingly higher standard of care. Just like the detection of antigens modernized heartworm testing 20 years ago, fecal antigen testing is now dramatically improving veterinarians’ ability to detect the most common intestinal worms found in dogs and cats.

Superior technology
Traditional flotation methods look for the presence of eggs in a fecal sample. However, eggs appear only in later stages of the infection cycle and shedding can be intermittent. Antigen testing offers more accurate intestinal parasite screening because the technology can detect the presence of an adult worm earlier in the infection cycle—before eggs are present or during intermittent shedding periods. That means earlier and more accurate diagnosis and treatment for patients as well as reducing the risk of infection for other pets and family members.

Best medicine
Regular testing for intestinal parasites is an industry standard. The Companion Animal Parasite Council (CAPC) recommends fecal screenings at least 2–4 times per year during the first year of life and at least 1–2 times per year in adult pets.

Fecal Dx antigen testing is now included in CAPC’s diagnostic recommendations for hookworm, roundworm, and whipworm. CAPC highlights, “Diagnosis by detection of antigen allows for the identification of prepatent and single-sex infections, supporting use of preventives, and allowing for earlier treatment.”

IDEXX offers the only hookworm, roundworm, and whipworm antigen testing available
Fecal Dx™ Antigen Panel. This panel is helping practitioners find intestinal parasites in more patients by detecting infections up to 30 days earlier than other methods.1–3 The panel is also not confounded by spurious eggs from other species that may show up due to coprophagy, the ingestion of infected feces.


  1. Data on file at IDEXX Laboratories, Inc. Westbrook, Maine USA.
  2. Elsemore DA, Geng J, Flynn L, et al. Enzyme-linked immunosorbent assay for coproantigen detection of Trichuris vulpis in dogs. J Vet Diagn Invest. 2014; 26(3):404–411.
  3. Elsemore DA, Geng J, Cote J, Hanna R, Lucio-Forster A, Bowman DD. Enzyme-linked immunoabsorbent assay for coproantigen detection of Ancylostoma caninum and Toxocara canis in dogs and Toxocara cati in cats [published online ahead of print April 1, 2017].  J Vet Diagn Invest. doi:10.1177/1040638717706098

Sarah Tasse, DVM

Sarah Tasse, DVM

Dr. Tasse received her DVM from Colorado State University in 1997. After graduation she worked in a variety of small-animal private practices in both Colorado and New England. She joined IDEXX in August 2011 as a medical affairs marketing manager for Companion Animal Group, Rapid Assay.

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