Fecal Dx antigen testing

Detect parasite infections even before eggs are present.

Black and white image of a cat's face.
Two wolfhounds laying in the grass.

Check another parasite off the list.

The most accurate, reliable diagnostic for shining a light on the most common and clinically relevant intestinal parasites in dogs and cats is Fecal Dx antigen testing. And soon, this test will detect Cystoisospora.

Upgrade to Fecal Dx

By testing for antigens rather than relying on the presence of eggs, you can detect earlier for hookworm, roundworm, whipworm, flea tapeworm, and—coming soon—Cystoisospora.

Graphic of a worm.

Earlier detection than fecal floatation1–5

Detect up to 5X more infections than fecal floatation alone1,4,6

Find what the microscope misses with Fecal Dx antigen testing2–5

  • Identify infections prior to eggs being shed.
  • Avoid false-negative results caused by intermittent shedding of eggs.
  • Detect worms even if eggs are not present in the fecal specimen.

See how early detection works.

Watch our latest video on fecal antigen testing.

Help protect pets and families like never before.

Detecting infections sooner helps you treat effectively, reducing the risk of infection to other pets and family members.6

Learn about antigen testing

Dipylidium caninum (flea tapeworm) under a microscope.

Read a peer-reviewed study

The overall prevalence of Dipylidium caninum (flea tapeworm) was found to be 5.8% in North America.

Immunoassay for detection of Dipylidium caninum coproantigen in dogs and cats

A cat looking out of a window.

Discover more intestinal parasite infections

With Fecal Dx antigen testing, find parasite infections the microscope misses.

Diagnostic update: Fecal Dx antigen testing

A human holding a large dog's paw.

Get diagnostic support

From infection to presentation: learn how to diagnose hookworm, roundworm, whipworm, and flea tapeworm earlier.

Clinical reference guide

A veterinarian having a discussion with a pet owner.

Talk with your clients

Help your pet owners be proactive about regular parasite screening. Get resources to increase client compliance and reduce the spread of infection.

Increase client compliance

Five parasites.
Screen for 9 diseases and infections carried by ticks, mosquitoes, and worms using IDEXX-exclusive tests

Learn about comprehensive parasite screening with IDEXX Preventive Care

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  1. Elsemore D, Beall M, Bezold T, et al. Detection of Dipylidium caninum coproantigen in experimental and natural infections [AAVP Abstract 23]. Paper presented at: American Association of Veterinary Parasitologists 67th Annual Meeting; June 26, 2022; Snowbird, UT
  2. Elsemore DA, Geng J, Flynn L, Cruthers L, Lucio-Forster A, Bowman DD. Enzyme-linked immunosorbent assay for coproantigen detection of Trichuris vulpis in dogs. J Vet Diagn Invest. 2014;26(3):404–411.
  3. Data on file at IDEXX Laboratories, Inc. Westbrook, Maine USA.
  4. Data on file at IDEXX Laboratories, Inc. Westbrook, Maine USA: Aggregate detection of hookworm, roundworm, and whipworm infections.
  5. Elsemore DA, Geng J, Cote J, Hanna R, Lucio-Forster A, Bowman DD. Enzyme-linked immunosorbent assays for coproantigen detection of Ancylostoma caninum and Toxocara canis in dogs and Toxocara cati in cats. J Vet Diagn Invest. 2017;29(5):645–653. doi:10.1177/1040638717706098
  6. Data on file at IDEXX Laboratories, Inc. Westbrook, Maine USA. Preliminary data on positive rate for Dipylidium caninum is approximately 6%.
  7. CAPC guidelines: controlling internal and external parasites in U.S. dogs and cats. Pets & Parasites website. Accessed July 25, 2022.