
Parasites are adapting. O&P has not.
Screening for GI parasites hasn’t changed much in decades. While O&P (ova and parasites) testing has its strengths, it also has significant weaknesses, relying heavily on visual identification. And ELISA testing has known inherent limitations. Further, there’s no guarantee that the parasites (or its eggs) will be present even in an adequately sized sample. Recent efforts to evolve parasite diagnostics still prove time consuming and suffer from inaccuracies, sample limitations, and narrowly focused tests.
KeyScreen has forever changed GI parasite testing.
Bringing the power of PCR to routine parasite screening.
KeyScreen™ GI Parasite PCR helps find more GI parasites so you can treat your patients with precision, speed, and confidence.
- Screen for 20 intestinal parasites
- Detect 2x more infections1 when compared to in-clinic fecal flotations (O&P)
- Detect benzimidazole resistance in hookworms
- Determine the zoonotic potential of Giardia
The Companion Animal Parasite Council (CAPC)2 recommends testing for gastrointestinal parasites at least four times in the first year of life for puppies and kittens and at least two times per year in adult dogs and cats, depending on patient health and lifestyle factors.
Comprehensive Screening, One Small Sample Size
All that’s required is a single 0.15 g sample, which can be stored for 10 days with refrigeration.
Affordable, Fast, Accurate
KeyScreen GI Parasite PCR is affordable and offers next-day results for most North American practices, making it practical for routine screening and annual wellness exams.
More Reliable Than O&P Testing
As a molecular diagnostic test, KeyScreen GI Parasite PCR rapidly and accurately identifies the genetic material of a wide range of parasites from a small fecal sample. KeyScreen GI Parasite PCR detects 2x more infections1 when compared to in-clinic fecal flotations (O&P) — even when O&P is done at a commercial veterinary reference lab.
Aligned with One Health Priorities and Antimicrobial Stewardship
According to the CDC, Giardia is the most common intestinal parasitic disease in the US, affecting more than one million people per year. Children, the elderly, and immunocompromised individuals are at much higher risk for Giardia infection and have higher infection rates, and infection rates tend to rise in late summer in the US.3
KeyScreen GI Parasite PCR, the most sensitive intestinal parasite screening panel in veterinary medicine, allows veterinarians to strengthen their commitment to One Health priorities — specifically, pharmacological stewardship and the responsible use of anthelmintic drugs — by delivering precise information about the type of infection present.
Leave the Fecals to Us
Performing fecals in-clinic is often a primary element of job dissatisfaction among technicians. And 94% of the clinicians surveyed in a study4 agreed that sending fecals to a reference laboratory produces more accurate results.
Send off a small sample and leave the fecals to us (and our network of 70+ North American laboratories) so you can get back to doing what you love most — caring for patients.
Product Information
U.S. Code
KeyScreen GI Parasite PCR Panel: T991
Canada Code
KeyScreen GI Parasite PCR Panel: CT991
Sample Size
0.15 grams feces
Turnaround Time
24 hours for most customers. 48 hours or less for all customers.
These parasites are hiding in your backyard.

KeyScreen is helping veterinarians experience better health outcomes for their patients and pet owners.

KeyScreen Resources
KeyScreen GI Parasite PCR Algorithm
Your go-to guide for interpreting KeyScreen GI PCR panel results.
KeyScreen GI Parasite Giardia Algorithm
Download the KeyScreen Giardia Algorithm to guide you through:
- Fecal testing
- Management/treatment
- Persistent Giardia cases
- Risk assessment for zoonotic potential
KeyScreen™ GI Parasite PCR Hookworm Algorithm
KeyScreen keeps you vigilant with evolving preventative treatment.
Paxton, a one-year-old boxer, was treated successfully for his steroid-responsive meningitis, but has re-presented white as a ghost. Follow the laboratory diagnostics to understand what happened, who or what was to blame, and why Paxton was not off the hook.