The Healthspan Study is an observational study to help us better understand the biology behind how our best friends age.

Participants will attend a single free vet visit that includes a complete wellness check.

An illustration of a Dobermann cropped so just the head is visible. It has its mouth open and is looking up at abstract elements that resemble stars, a chromosome and a molecule.

More than 500 dogs will participate in The Healthspan Study, from Maltipoos and Pomeranians to Mastiffs and Great Danes.

Collecting data on aging markers in a wide variety of dogs will help us identify some of the first ways we can help dogs live longer, healthier lives. This study will provide some of the foundational information for the next phases of our research and development.

Uncovering the Markers of Dog Aging


Vet Visit Per Dog


Aging Biomarkers Tracked


Total Participants

Perks of Participation

  • A comprehensive assessment of your dog’s physical and emotional well being, with reporting on several measures of your dog’s health.
  • A free vet visit and complete wellness exam for your dog.
  • Exclusive Loyal Healthspan Study gift package.
Register your dog
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We are looking for dogs that:

  • have an accurately documented birth year*
  • weigh less than 25 lbs or more than 50 lbs,
  • are 2-5 years old OR 7 or more years old, and
    do not have a diagnosis of diabetes mellitus or hypoadrenocorticism (also called Addison's disease)

* This can be either a breeding record with a specific date of birth OR a vet exam or vet treatment record from when the dog was six months or younger

Participating veterinary clinics in:

Quakertown, Pennsylvania

Quakertown Veterinary Clinic

Springfield, Missouri

Bradford Park Veterinary Hospital

Fort Collins, Colorado

Front Range Veterinary Clinic

Harrisburg, Pennsylvania

Animal Hospital of Dauphin County

SF Bay Area, California

Muttville Senior Dog Rescue (Pop-up Clinic)

San Carlos, California

4 Paws Mobile Veterinary Services

Decatur, Illinois

Northgate Pet Clinic

Dallas, Texas

Hillside Veterinary Clinic

Bristol, Connecticut

Chippens Hill Veterinary Hospital

Ithaca, New York

Cornell University Hospital for Animals

Zachary, Louisiana

The Animal Center

Does your pup want to be a Healthspan Study Scientist?

Step 1

Enroll your dog by joining the Loyal Pack below.

A Healthspan Study veterinarian will reach out to you to confirm and complete your enrollment.

Step 2

Schedule your dog to one of the study sites for a 30-60 minute free wellness check up.

The vet will ask you for information on your dogs health and take blood samples. That's it!

Step 3

Loyal vets will send your Loyal Healthspan Study gift package within 90 days!


The study began recruiting in December 2020.

After qualification, you’ll agree to bring your dog to our trial site for a standard slate of tests common in veterinary checkups. We expect this vet visit to take 30 minutes to an hour.

The study will begin in February 2021 and end in July 2021. You’ll receive updates on your dog’s health throughout the entirety of the study.

We’ll run a set of standard blood tests and perform a physical examination to get a baseline measure of your pup’s health.

We hope to identify biological measures of aging in dogs, allowing us to better characterize their aging process and ultimately develop therapeutics that delay the onset of age associated disease.

Yes! This is a non-interventional study, meaning we aren’t administering any drug, only observing multiple measures of physical and emotional well being in dogs. This includes standard tests and procedures common in veterinary check-ups.

This study is sponsored by Cellular Longevity, inc., dba Loyal, an animal health company.

Email and a Loyal veterinarian will get back to you shortly.

Illustration of a young Saint Bernard dog running very fast with its mouth open in excitement.

We look forward to learning more about you and your pup!

Register your dog

For Vets

Want to work with us or host a future study?