Partnerships
Integrated Testing & Performance Support for Medical and Longevity Practices
Custom Fit partners with physicians, longevity clinics, and other providers to deliver clinically relevant testing and performance services that enhance patient care, improve outcomes, and expand service offerings — without adding operational burden.
what makes Custom Fit services Unique?
We focus on using the best up to date testing services like DEXA, VO2 Max, and early-detection Bloodwork.
Every Custom Fit service is performed by an experienced exercise physiologists and registered dietitians.
Operating out of a clean, polished space built for curated client patient experiences.
A Clinical Extension of Your Practice
Modern medicine is increasingly data-driven — yet many practices lack access to functional, performance-based metrics that connect physiology to real-world outcomes.
Preventive and longevity medicine
Risk stratification and baseline assessment
Lifestyle, nutrition, and exercise-centered data
Longitudinal tracking and outcome monitoring
Our LONGEVITY TESTING LAB
Enhance your practice with Custom Fit's diagnostic testing.
DEXA Scans:
Gold-standard body composition analysis. Measuring lean mass, fat mass, visceral fat, and bone density.
VO2 Max & RMR Testing:
Optimize metabolic and cardiovascular performance. Highly-regarded as a gold-standard measure of longevity potential.
3D Gait Analysis
Assess walking and running mechanics to optimize how clients move through life.
Advanced Bloodwork
Test 50 key biomarkers to optimize health and longevity, thereby ruling out any early signs of over 100 disease conditions.
Nutrition- and Fitness-Specific Genetic Testing
Looks at 70 SNPs for genetic traits that inform diet, training, and recovery.
Who We Partner With
Enhance preventive care, baseline assessments, and long-term monitoring with objective body composition, metabolic, and fitness data.
Expand services without additional infrastructure, staffing, or equipment investment.
Anchor nutrition recommendations in real metabolic, body composition, and genetic data.
Provide objective health metrics that support body composition goals, recovery strategies, and patient education.
Differentiate offerings with clinically relevant testing and professional interpretation.
Elevate your wellness programs by providing tools that motivate employees to stay active and engaged with their health.
“As a Dietitian, the DEXA Scan at Custom Fit has been transformative for my practice. It allows me to set realistic goals for clients, monitor their progress over time, and determine precisely when and how to adjust their plans.”
Why Partner With
Custom Fit
In-person assessments using validated protocols
Seamless referral and communication workflows
Clear, professional reporting
Conveniently located in San Francisco, serving Bay Area practices
Experienced team with performance and clinical backgrounds
We focus on clarity, precision, and collaboration — not trends or surface-level metrics.
Partnership Models
Referral-based testing services
Co-managed client or patient care
Integrated longevity and performance packages
Custom partnerships based on practice needs
We’re happy to tailor a partnership model that aligns with your workflow and patient population.