Fecal Dx antigen testing

Detect parasite infections even before eggs are present

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


Earlier detection than fecal flotation.

Detect 2x more infections than fecal flotation alone.

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.

Upgrade to Fecal Dx

See how early detection works.

Watch our latest video on fecal antigen testing
Young girl playing with dog in grassy yard

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.7

Learn about antigen testing

Graph comparing parasite detection levels.

Discover more intestinal parasite infections

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

Diagnostic update: Fecal Dx antigen testing

Fecal Dx antigen testing clinical reference guide.

Get diagnostic support

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

Clinical reference guide

Woman holding dog gives FecalChek Home Collection Kit to veterinarian

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.