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.
One-Stop, In-House Experience
A Seamless, white-glove Experience for Your Patients
We understand that patient experience reflects directly on your practice.
At Custom Fit, our goal is to ensure that patients feel continuity of care while maintaining your clinical leadership.
Your patients can complete DEXA, VO₂ max, metabolic testing, and bloodwork all in a single morning. All assessments are conducted on-site in a controlled, professional environment.
For many partner clinics, this model feels like an extension of their own facility — without the need for additional equipment, staffing, or space.
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.
“Custom Fit has created a true one-stop-shop model for advanced testing. My patients are able to complete all of their tests in one streamlined visit and the experience feels integrated and professional. Plus the reporting allows me to make informed clinical decisions without adding operational burden..”
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.