The Molecular Fitness Blood Test™
Partner rate
Offer your customers a preferred price
$179
$399
Self-collection blood testing kit
Prepaid return shipping
Comprehensive molecular lab analysis
Full report & insights
On-demand support from VO Health's scientists
First test
Reserve your organization's spot on the waitlist for $1, receive a complimentary test.
Tests will be shipped to you with the next available batch.
VO Health's Flagship Blood Test
The Molecular Fitness Blood Test™ puts gold-standard VO2 Max testing into a simple, at-home blood test. It goes beyond oxygen alone to estimate and map the unique molecular signatures of fitness from circulating proteins in the blood.
Why VO2 Max?
VO₂ Max is the gold-standard of cardiorespiratory fitness - not only is it a core metric of endurance performance, it is also the best independent clinical predictor of all-cause mortality and chronic disease risk. Long considered a vital sign by the American Heart Association, VO2 Max is difficult, costly and time-consuming to measure using traditional testing methods.
VO Health has been on a mission to make laboratory-grade VO2 Max testing easy and scalable for athletes, clinicians, coaches and health enthusiasts to do throughout the year.
How we Built the test
Our Molecular Fitness Blood Test is Built on gold-standard lab measurement, deep proteomic profiling, and machine learning trained on thousands of human samples. Our dataset includes a wide range of individuals, ages 18-82, including Olympic rowers, marathon runners and cyclists to individuals in their late 70s living with chronic diseases, and everybody in between.
The result: a Molecular VO₂ Max estimate, a unique Molecular Fitness Score, and 10 biological pathway scores that sit underneath your scores - scores such as inflammation, fat metabolism, oxygen transport, oxidative stress.

3,500 gold-standard VO2 Max tests paired with resting blood draws
VO's proprietary dataset spans ages 18–81 with VO2 Maxes from 13–76 ml/kg/min, from regular people to hybrid athletes and Olympians.

1,000 proteins measured per sample
Each blood sample is run through cutting-edge high-throughput proteomics technology that quantifies 1,000+ distinct proteins.

Top 50 proteins in your report
Our model selects the 50 most strongly associated with fitness to estimate VO2 Max and the underlying molecular pathways.
What your results reveal
Process and timeline
From order to insights — here's exactly what happens after you reserve your kit.
Watch how collection works
Pricing
Preferred pricing for beta launch partners, with on-demand trainings and interpretation support.
Partner rate
Offer your customers a preferred price
$179
$399
Self-collection blood sample kit
Prepaid return shipping
Comprehensive molecular lab analysis
Full report & insights
On-demand support from VO Health's scientists
First test
Reserve your organization's spot on the waitlist for $1, receive a complimentary test.
Tests will be shipped to you with the next available batch.
Frequently asked questions
This test and report is intended to assist you in maintaining and encouraging a healthy lifestyle, and is not intended to diagnose, treat, cure, or prevent any disease or medical condition. The physiological values contained in this report are not provided for medical or clinical purposes. Consult a qualified healthcare provider before making any health-related decisions.







