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Measuring fitness: exercise tests and blood estimates
An exercise test measures oxygen use during exertion. VO Health’s blood test instead estimates VO₂ max from protein measurements. These approaches provide different information, so their scores should not be treated as…
Why VO₂ max matters
VO₂ max describes how much oxygen your body can use during hard exercise. It reflects the work of your heart, lungs, blood, and muscles together. VO Health’s Brooks Leitner explains why cardiorespiratory fitness matters…
About VO Health
VO Health develops blood-based measures of fitness. Its Molecular Fitness Blood Test uses protein measurements to estimate VO₂ max and describe fitness-related pathways. The company was co-founded by Brooks Leitner, MD PhD, and Alina Zolotareva, RDN, and is based in New Haven, Connecticut. The early-access program includes self-collection, a molecular fitness report, and a results discussion with VO Health’s team. This is a wellness test, not a diagnostic test. A blood-based estimate differs from a directly measured exercise test. Check VO Health’s early-access page for current availability, pricing, and shipping details.