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Fecal Dx antigen testing

Double your detection of intestinal parasite infections 

Detects 2X more parasites than faecal ova and parasites (O&P) alone.1

A single result identifies hookworm, roundworm, and whipworm infections up to 30 days earlier, even when eggs are not present.2

Early, definitive results help you diagnose and treat effectively, reducing the risk of infection to other pets and family members.

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Why antigen testing?

The Companion Animal Parasite Council (CAPC) guidelines recommend including faecal antigen testing to diagnose hookworm, roundworm, and whipworm infections.3–5

Faecal antigen testing can identify infections that can be missed when using other methods.1 Because the testing detects antigens, positive results confirm the presence of worms in the intestinal tract. This allows you to diagnose infections when worms are not shedding eggs or infections that are caused by worms of a single sex.

For more information: read the diagnostic update, Fecal Dx Antigen Testing—Find Parasite Infections the Microscope Misses.

Download the Fecal Dx Clinical Reference Guide

Bar graph showing how fecal dx antigen find 2x more hookworm, roundworm, and ringworm infections than O&P alone

Results indicate that adding antigen ELISA testing to your faecal O&P may double the number of parasite infections detected.1

Double the number of infections detected by running your faecal tests with IDEXX. 

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Related products

Get the most out of your Fecal Dx antigen testing

Improve pet owner conversations

With VetConnect PLUS, you can dynamically share personalised client-friendly summaries and results; such as negative vector-borne disease screens and healthy preventive care testing, to help illustrate the value of baseline testing.


Forms and other resources

Access IDEXX Refernce Laboratories specimen guidelines, forms, articles and more.



  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. CAPC guidelines: hookworms. Companion Animal Parasite Council website. Accessed Decemeber 20, 2018. 
  4. CAPC guidelines: ascarid. Companion Animal Parasite Council website. Accessed Decemeber 20, 2018. 
  5. CAPC guidelines: Trichuris vulpis. Companion Animal Parasite Council website. trichuris-vulpis. Accessed Decemeber 20, 2018.