Diagnostics & Assessment
A cardiopulmonary exercise test of your maximum oxygen uptake, one of the strongest predictors of long-term health, with your training zones.
Cardiorespiratory fitness, measured as VO2 max, is one of the strongest predictors of long-term survival. In a 2018 study of 122,007 patients who had treadmill testing (Mandsager K et al., JAMA Network Open), lower fitness was associated with a mortality risk comparable to or greater than traditional risk factors such as smoking, diabetes and coronary artery disease. Risk fell as fitness rose, and no upper limit of benefit was observed. The fittest group had about one-fifth the adjusted mortality risk of the least fit. That study estimated fitness from treadmill performance rather than measuring VO2 max directly, and it shows association, not proof that getting fitter will extend your life.
VO2 max measures the maximum volume of oxygen your body can utilize during intense exercise, expressed in milliliters per kilogram of body weight per minute (mL/kg/min). It reflects the integrated function of your heart (cardiac output), lungs (gas exchange), blood (oxygen-carrying capacity), and skeletal muscle (mitochondrial oxygen utilization). When any link in this chain weakens — as naturally occurs with aging — your VO2 max declines, and with it your functional capacity, metabolic resilience, and statistical life expectancy.
The test itself involves exercising on a treadmill or cycle ergometer while wearing a metabolic analyzer mask that measures the precise volume and composition of every breath. Exercise intensity increases in staged increments until you reach volitional exhaustion. The data captured includes your VO2 max, anaerobic threshold (VT1 and VT2), respiratory exchange ratio, fat and carbohydrate oxidation rates at each intensity zone, and heart rate recovery kinetics.
Why this matters practically: your anaerobic threshold determines the exercise intensity you can sustain for prolonged periods. Your fat oxidation curve reveals how efficiently your metabolism utilizes fat as fuel. Your heart rate recovery predicts autonomic nervous system health. Together, these metrics allow us to design an exercise prescription that is specific to your physiology — not generic guidelines pulled from a poster in a gym.
We treat VO2 max as one of the most useful numbers in a longevity assessment, and we measure it with clinical-grade equipment interpreted by a physician, not a smartwatch estimate. Book a consultation with our longevity physician to schedule your test.
Backed by large studies or guidelines and part of standard practice. How we grade evidence
What it shows
Cardiorespiratory fitness is one of the strongest predictors of how long people live, across very large cohorts.
What it does not show
It predicts risk across populations. It is not a diagnosis, and your physician reads it alongside your other results.
Across 33 studies and 102,980 people, each 1-MET higher fitness level was linked to 13% lower all-cause mortality.
In 122,007 patients, the fittest group had a fifth of the adjusted mortality of the least fit, with no upper limit of benefit.
Numbers in brackets point to the studies above. Medical review: a physician who did not write this page checks each line against the source it cites, and checks that nothing reads as a promised result. How we review
A good fit
Talk to us first
Your physician confirms at screening whether this is right for you. If anything above applies, tell us when you book.
Before you arrive
Preparation instructions, such as fasting for blood work, are sent when you book.
The test
Consent and basic vitals, then the assessment itself: 45-60 minutes (including warm-up, test, and cool-down).
Physician review
A Genoryx physician takes you through the results against your history and goals.
Your plan
A written summary with clear next steps and when to retest.
Every result is reviewed with you by a Genoryx physician, against your history and goals. Results are interpreted in context, not as a stand-alone diagnosis, and anything that needs specialist follow-up is referred on.
Meet the clinical teamVO2 max naturally declines with age at roughly 10% per decade after age 30. For men aged 40-49, a score above 40 mL/kg/min is considered "good" and above 48 is "excellent." For women of the same age, above 33 is "good" and above 40 is "excellent." In observational studies, people in the top quarter for their age and sex have markedly lower mortality, so that is a sensible target.
Smartwatch VO2 max estimates are calculated from heart rate algorithms and are typically accurate only within 10-15%. A clinical test directly measures oxygen consumption and carbon dioxide production from every breath, providing true VO2 max along with anaerobic thresholds, fat oxidation rates, and ventilatory data that wearables cannot capture.
Yes. Research consistently shows that VO2 max is trainable at any age. High-intensity interval training (HIIT) and zone 2 endurance training are the most evidence-based approaches. Meaningful improvements are common within a few months of structured training, including in previously sedentary older adults.
Evidence · Established
The fasting blood panel in the 400+ parameter entry assessment: heart, metabolic, hormone, liver, kidney and inflammatory health, read with a physician.
30-45 minutes (blood draw) + 60-minute physician consultation
Evidence · Strong & indicated
A 60-second bioelectrical impedance scan of muscle, fat, visceral fat and body water by body segment, reviewed with a physician.
60 seconds (scan) + 15-minute physician review
Evidence · Established
Dual-energy X-ray absorptiometry, a reference method for measuring fat, lean mass, visceral fat and bone density region by region.
10-15 minutes (scan) + 30-minute physician review
Start with the 400+ parameter entry assessment and a 60-minute physician consultation at either Hyderabad clinic. Open seven days, 11 AM to 9 PM.
Book a consultation