Peer-reviewed veterinary case report
Accuracy of in-clinic Giardia tests versus lab tests in dog poop
By Barbecho, Jennifer Mizhquiri et al.·Published in Parasites & vectors·2018·College of Veterinary Medicine, United States·View original on PubMed →
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Original publication title: Comparative performance of reference laboratory tests and in-clinic tests for Giardia in canine feces.
- Species:
- dog
Plain-English summary
A study looked at how well different tests for Giardia, a common intestinal parasite, work in dogs. Researchers compared four in-clinic tests to a more accurate laboratory test using fecal samples from dogs. They found that the SNAP Giardia Test performed the best, accurately detecting the parasite more often than the other tests. If your dog shows signs of gastrointestinal issues, like diarrhea or vomiting, ask your vet about the SNAP test for Giardia to ensure accurate diagnosis and treatment.
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Abstract
BACKGROUND: We examined the performance of four in-clinic Giardia diagnostic tests by comparing results to three laboratory methods for detection of Giardia. A set of 177 fecal samples originally submitted to a commercial laboratory by veterinarians for routine ova and parasite (O&P) testing was used. Specimens were examined by direct immunofluorescence assay (DFA) for presence of Giardia cysts which served as the gold standard. Fecal samples were tested using a Giardia-specific cyst wall antigen microtiter plate format enzyme-linked immunosorbent assay (ELISA) and each of the in-clinic assays adhering to the package insert for each kit. RESULTS: Evaluated were four in-clinic antigen test kits: VetScan® Canine Giardia Rapid Test (Abaxis), Anigen® Rapid CPV-CCV-Giardia Antigen Test (BioNote), SNAP® Giardia Test (IDEXX) and Witness® Giardia Test (Zoetis). In the comparison of the in-clinic tests to the DFA standard test sensitivity ranged between 70.0-87.1%, and specificity ranged between 71.1-93.4%. CONCLUSION: Of the tests evaluated here, the SNAP test had the highest sensitivity and specificity. The SNAP test had the highest percent positive and percent negative agreement when compared to the microtiter plate format ELISA and the O&P assay.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/30068364/