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Diagnostic Test🐕 Dogs🐈 Catsgastrointestinal

Fecal Flotation with Centrifugation

🗣️ Pronounced:FEE-kul floh-TAY-shun
In One Sentence (Plain English)

A microscopic parasitological test utilizing high-density flotation solutions and centrifugal force to concentrate and identify intestinal parasite eggs and cysts.

Editorial Status: Verified from peer-reviewed veterinary sources (v1.0)
Updated: 2026-01-15

💬 In Plain English

A fecal flotation with centrifugation is the gold-standard test used to inspect your pet’s stool for hidden intestinal parasites. Parasite eggs (such as hookworms, roundworms, whipworms, and Giardia cysts) are microscopic and impossible to see with the naked eye. In this test, a small sample of fresh stool is mixed with a dense sugar or zinc sulfate liquid and spun in a centrifuge. Because the liquid is denser than the parasite eggs, the eggs float to the surface and stick to a glass coverslip. The veterinarian examines the coverslip under a microscope to pinpoint exact parasite species and prescribe the correct dewormer.

🔬 Clinical & Technical Depth

For Vets & Technicians

Formal Clinical Definition

Quantitative parasitological diagnostic technique employing centrifugal flotation in high specific-gravity solutions (zinc sulfate 1.18 or Sheather’s sugar 1.27) to separate and harvest parasite ova, oocysts, and cysts from bulk fecal debris.

Why Veterinarians Use It

Veterinarians perform annual or semi-annual fecal centrifugations on all pets to diagnose intestinal parasites, guide targeted deworming, and protect human family members from zoonotic roundworms and hookworms.

Clinical Context Encountered

Requested at every annual checkup, puppy/kitten vaccine visit, or when investigating diarrhea.

Clinical Reference Guide (Diagnostic Test)

Sample RequiredFresh voided fecal sample (1–2 grams, roughly walnut-sized); stored cool, non-desiccated.
Patient PreparationCollect stool within 12 to 24 hours of examination.

Normal vs. Abnormal Results

Normal: no parasite ova, oocysts, or cysts observed (No Parasites Seen, NPS). Abnormal: detection of characteristic roundworm, hookworm, whipworm, tapeworm, or coccidia ova.

Next Steps If Abnormal

Administer species-specific anthelmintic (e.g. fenbendazole, pyrantel, praziquantel); clean yard/litter box; repeat fecal float 2 to 4 weeks post-treatment.

🚨 Red Flag Warnings (When to Contact an Emergency Vet)
  • •Many intestinal parasite eggs (especially Toxocara roundworms and Ancylostoma hookworms) are zoonotic: they can infect human children playing in contaminated soil and cause visceral/ocular larva migrans.

❓ Questions to Ask Your Veterinarian

Take these actionable questions with you to your next clinic visit or appointment:

  • 1Was this test performed using centrifugal flotation (the gold standard) rather than a simple passive gravity float?
  • 2Were any zoonotic parasite eggs (such as roundworms or hookworms that can infect children) detected?
  • 3Does my pet require a broad-spectrum dewormer (such as fenbendazole) and a follow-up recheck stool test in 2 to 4 weeks?

Academic & Clinical References

  • CAPC Guidelines for the Control of Internal Parasites in Dogs and Cats
    Organization: Companion Animal Parasite Council (CAPC) • Accessed: 2026-01-10
    https://www.capcvet.org