The Longevity Circuit at RTRX 2026
A Snapshot of Your Wellness Today for the Strongest Tomorrow
The Longevity Circuit is a series of five interactive assessments designed to reveal how your body is actually functioning across four core categories: mobility, grip strength, power and body composition.
Built and curated by the functional medicine team at Donaldson, each station gives you a real, measurable score you can act on today and track for years to come.
WELCOME
The 5 Components of the Longevity Circuit
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Station #1: Dorsiflexion Lunge
Reveals how well your joints support everyday performance.
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Station #2: Grip Strength
Measures a surprisingly powerful indicator of long-term health.
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Station #3: Dead Hangs
Tests spinal decompression and upper body endurance.
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Station #4: Force Plates
Captures explosive power and your neuromuscular response.
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Station #5: InBody Scan
Delivers a full body composition picture, including muscle, fat and hydration.
What To Do with Your Scores — Save This for Circuit Later!
Your results are a powerful starting point. Use them to identify where targeted movement, nutrition or recovery changes could have the greatest impact on your long-term health.
But Remember: Physical Performance is Only One Piece of the Picture
Lab work is the other. Combining both provides the full context needed to make lifestyle recommendations that genuinely work for you. Speak with any of our wellness experts on-site to talk through your scores and a plan built around your future self.
3×4 Genetic Testing – New at RTRX 2026
This year, attendees can go even further with an optional 3×4 genetic saliva test — purchased on-site and shipped directly to your home for collection at your convenience.
Once your results are ready, you’ll meet one-on-one with a Donaldson functional medicine provider who walks through every data point, translating your genetic profile into a plan you can use across nutrition, movement, supplementation and beyond.
Genetic Insights You Can Capture:
- Cognitive performance & brain health
- Cardiovascular risk & health markers
- Metabolism & weight management
- Inflammation response
- Hormone pathways
- Nutrient absorption & deficiencies
- Fitness recovery & injury predisposition
- Ability to break down histamines & eliminate toxins
Marguerite Weston, MD, IFMCP
RTRX’s Trusted Voice for Health, Wellness & Functional Medicine
Dr. Weston curated the Longevity Circuit and has been proud to grow it each year at RTRX. Double board-certified in Family and Sports Medicine, IFM-certified and a Columbus Monthly Top Doctor every year since 2019, she lends more than 20 years of root-cause clinical experience to every station on the floor — and every conversation that follows.
She takes pride in the opportunity to bring the core philosophies of functional medicine to this community and looks forward to expanding what this circuit can offer each time RTRX returns.
Colleen Bush, RDN, IFNCP
Functional Nutrition Specialist with D1 Athletic Experience
Colleen knows firsthand that athletic discipline and a healthy lifestyle don’t always tell the whole story. She is a former D1 volleyball player who turned to functional nutrition after her own autoimmune conditions continued to progress despite doing everything right. Colleen brings this rare combination of lived experience and clinical expertise to each patient.
The Intersection of Wellness & Appearance
Donaldson Health & RTRX
Donaldson is a Columbus-based health organization comprised of three pillars, including functional medicine, aesthetic medicine and plastic surgery. And each pillar shares the same goal of helping you love your body more and understand it better.
Our partnership with RTRX is an extension of that mission: expert-led conversations, hands-on physical engagement and a shared conviction that investing in your health is one of the highest-return decisions you’ll ever make.
Corporate Wellness Programs to Strengthen Teams & Retain Talent
Did you enjoy the circuit and want to bring this kind of functional medicine experience to your workplace?
Donaldson’s corporate wellness programs deliver hormone health, advanced functional testing, medical weight management, nutrition support and on-site health talks — all centered around the needs of your team.