Peer-reviewed veterinary case report
Accuracy of dog fecal parasite tests by vet students versus lab method
By Gates, Maureen C & Nolan, Thomas J·Published in The Journal of parasitology·2009·School of Veterinary Medicine, United States·View original on PubMed →
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Original publication title: Comparison of passive fecal flotation run by veterinary students to zinc-sulfate centrifugation flotation run in a diagnostic parasitology laboratory.
- Species:
- dog
Plain-English summary
A study found that when veterinary students examined fecal samples from stray dogs, they only agreed with a more accurate lab test about 62% of the time. The students were able to identify some common parasites, like hookworms and roundworms, but missed many cases, including Giardia, which they only detected in about 15% of instances. This suggests that using passive fecal flotation tests in regular veterinary practice might overlook nearly half of the dogs that are actually infected with parasites. It's important for pet owners to discuss the best testing methods with their veterinarian to ensure accurate diagnosis and treatment.
People also search for: dog fecal test accuracy · Giardia in dogs symptoms · how to treat hookworms in dogs
Abstract
The sensitivity of fecal examination methods can be influenced by both technician error and methodology. In this analysis, we compared the results of 335 passive fecal flotation examinations performed on the feces of stray dogs by 3rd-yr veterinary students at the University of Pennsylvania, School of Veterinary Medicine, to the results obtained through zinc-sulfate centrifugation performed by the diagnostic parasitology laboratory on the same fecal samples. The students' passive flotation results agreed with the laboratory zinc-sulfate centrifugation for only 62.4% of samples. Students were able to diagnose 75.0% of Ancylostoma caninum cases, 71.4% of Toxocara canis cases, 54.2% of Trichuris vulpis cases, 26.7% of Cystoisospora spp. (C. ohioensis-like and C. canis) cases, and 14.7% of Giardia lamblia cases. There were also 70 instances where students reported the presence of parasites in the sample that were not diagnosed by zinc-sulfate centrifugation. Based on the overall study findings, passive fecal flotation examinations run in private practice could be missing up to 50.5% of infected dogs, due to either technician error or inherent limitations to the passive fecal flotation technique.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/19284803/