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Early cancer detection in dogs with a simple blood draw is now available through select veterinary clinics. Use our clinic locator map to see if there is an OncoK9® provider in your area.
If you are unable to locate a veterinary clinic, or you would prefer to see your own vet, please join our interest list and share an OncoK9 brochure with your veterinarian.

Early Cancer Detection in Dogs with a Simple Blood Draw
OncoK9 is a first-in-class multi-cancer early detection (MCED) test. Pet parents get mammograms and colonoscopies to help detect cancer early. Now, our dogs have OncoK9, a cancer screening test developed specifically for them.
Simple
Blood Draw
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Most cancer tests are either invasive (like a tissue biopsy) or require special equipment (like imaging). OncoK9 requires only a simple blood draw. The sample collection can take place during the same visit when the veterinarian prescribes the test.
Multi-Cancer
Coverage
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OncoK9 has demonstrated cancer signal detection in 30 different cancer types, including 8 of the most common cancers in dogs.
Cutting-Edge
Technology
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OncoK9 interrogates millions of cell-free DNA fragments in each blood sample, using sophisticated next-generation sequencing technology and bioinformatics algorithms to detect genomic alterations associated with cancer.
Early
Detection
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By identifying cancer signal in cell-free DNA extracted from a blood sample, OncoK9 may allow for earlier detection of cancer, before the onset of clinical signs.
6 Million New Cancer Cases Per Year in Dogs


OncoK9 – Annual Screening
OncoK9 is recommended as an annual screening test for all dogs starting at 7 years of age and potentially at younger ages for dogs belonging to breeds that are predisposed to cancer.


Common Breeds Predisposed to Cancer
Labrador Retriever
French Bulldog
German Shepherd
Golden Retriever
Beagle
Rottweiler
Boxer
Siberian Husky
Bernese Mountain Dog
Rhodesian Ridgeback
Flat-Coated Retriever
Giant Breeds Predisposed to Cancer
Scottish Deerhound
Great Dane
Irish Wolfhound
Mastiff
This list is derived by intersecting breeds known to be at higher risk of cancer with breeds that are common in the United States (in order of AKC popularity); the list is not exhaustive, and other breeds may also have a high risk of cancer. OncoK9 may not currently detect all cancer types to which certain breeds are predisposed. See the list of cancer types currently detectable by OncoK9 here: https://oncok9.info/mced-list/download.
Annual Cancer Screening for All Dogs 7 and Older
9x Higher Risk of Cancer
9x Higher Risk of Cancer
If your dog is not a breed predisposed to cancer, consider adding OncoK9 to their annual exam starting at 7 years old.
OncoK9 – Aid in Diagnosis
When veterinarians identify clinical signs or other clinical findings that may lead them to suspect cancer, they may choose to prescribe OncoK9 as part of their clinical workup.


Common Signs of Cancer in Dogs
If you observe any of the following signs in your dog, schedule an exam with a veterinarian.
- Decreased or absent appetite
- Nausea and/or vomiting
- Unexplained weight loss
- Difficulty breathing or shortness of breath
- Bloating or abdominal swelling
- Unusual odors (malodorous discharge and/or bad breath)
- Lethargy or exercise intolerance
- Difficulty chewing or swallowing
- Weakness and/or collapse
- Pale gums or tongue
- Limping or lameness
- Sores that do not heal
- Bruising and/or bleeding and/or petechiation
- Increased frequency and/or volume of urination
- Painful and/or bloody urination
- Changes in stool
- Increased thirst
- Mass(es) and/or lump(s)
- Enlarged lymph node(s)
- Difficulty urinating or defecating
Source
https://www.aaha.org/your-pet/pet-owner-education/ask-aaha/canine-cancer/Pet Parent Interest List
If you are unable to locate an OncoK9 provider near you, or prefer to introduce your own vet to PetDx, please share an OncoK9 brochure with your veterinarian and join our interest list below.
Or share your vet's information with PetDx, and we will let them know you are interested in early cancer detection for dogs and talk to them about offering OncoK9.