Fecal Dx antigen testing

Screening adult dogs

Select Fecal Dx antigen testing during every fecal screening

Fecal screening for "healthy" dogs

Earlier detection than fecal flotation.
Detect up to 5x infections than fecal flotation alone.

Detect up to 5x more parasitic infections in dogs that appear healthy with the Fecal Dx Antigen Panel.1,4

In seemingly healthy adult dogs, fecal flotation by centrifugation misses many of the most common parasites: hookworm, roundworm, whipworm, and flea tapeworm.1,4

German shorthair pointer mix sitting on green grass
Case study: Scout

During Scout's annual examination, an intestinal parasite infection was caught before symptoms were present. 

Read the case study

Image of detailed diagnostic algorithm
What to do with your test results

Whether a positive or negative result, this algorithm can guide next steps based on your patient's Fecal Dx antigen test results.

Use this algorithm for wellness screening

Hand holding test tube of blood in front of dog
Get a more complete parasite screen at IDEXX Reference Laboratories

Bundle the Lab 4Dx Plus Test for vector-borne disease screening with Fecal Dx antigen testing with test code 31804.

Learn more about parasite screening

Limit Giardia testing to sick cases, per CAPC recommendations

Follow Companion Animal Parasite Council (CAPC) recommendations

The CAPC recommends testing symptomatic (intermittently or consistently diarrheic) dogs and cats with a combination of direct smear, fecal flotation by centrifugation, and a sensitive, specific fecal ELISA optimized for use in companion animals.6

Find and treat more Giardia cases with IDEXX Giardia tests

In simple diarrhea cases of short duration, a Giardia antigen by ELISA or the SNAP Giardia Test is recommended in addition to Fecal Dx antigen testing and fecal flotation by centrifugation. 

Learn about the SNAP Giardia Test | Get test codes

Fecal screening for sick dogs

Improve the diagnosis and treatment of sick dogs by adding Fecal Dx antigen testing to other diarrhea tests.
Image of detailed diagnostic algorithm
What to do with your test results

Rule out infectious diseases by differentiating between simple and complicated diarrhea.

Use this algorithm during sick visits

Graph comparing parasite detection levels.
Discover more intestinal parasite infections

Detect more infections in sick cases by adding Fecal Dx antigen testing to fecal ova and parasites (O&P).1,4

Diagnostic update: Fecal Dx antigen testing

Two-year old Welsh corgi
Case study: Caleb

Caleb's real parasitic infection was detected without the presence of eggs. 

Read the case study

Five parasites.
Screen for 10 diseases and infections carried by common parasites using IDEXX-exclusive tests

Learn about comprehensive parasite screening with IDEXX Preventive Care

Include Fecal Dx antigen testing as part of every fecal examination

*Analysis of 442,884 fecal samples from adult dogs (> 2 years of age) that presented for preventive care visits between December 2015 and June 2018. Fecal examinations were conducted by IDEXX Reference Laboratories.


  1. Elsemore D, Bezold T, Geng J, Hanna R, Tyrrell P, Beall M. Immunoassay for detection of Dipylidium caninum coproantigen in dogs and cats. J Vet Diagn Invest. Published online July 25, 2023. doi:10.1177/10406387231189193
  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. doi:10.1177/1040638714528500
  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, whipworm, and flea tapeworm 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. Companion Animal Parasite Council. CAPC Guidelines: Giardia. Accessed September 10, 2023.