A biological age test estimates how old your body is functioning, as opposed to your chronological age (the number of years since you were born). The gap between the two is what longevity medicine tries to shrink.
What a biological age test measures
The most established tests use DNA methylation: chemical marks on your DNA that change in predictable ways as you age. Algorithms called “epigenetic clocks” read those marks from a blood or saliva sample and estimate biological age and “pace of aging.” Other approaches estimate biological age from blood biomarkers (like ApoB, HbA1c, hs-CRP and albumin) or from functional measures such as VO₂ max and grip strength.
How much does a biological age test cost?
Consumer epigenetic tests typically range from roughly $200–$500; biomarker-based estimates can be derived from a standard blood panel you may already run. Prices and providers change often, so treat any single figure as a snapshot.
The real value is in the trend, not the number
A single biological age result is a conversation starter. Its clinical value comes from retesting over time and pairing it with the inputs that move it: sleep, training, nutrition, metabolic health and specific interventions. That’s the difference between a novelty and a program.
How clinics use it
Longevity and functional-medicine clinics baseline biological age, then track it alongside wearables, CGM and labs in one longitudinal dashboard, so they can show clients what’s actually working. If you run these programs, our longevity dashboard was built for exactly this. See /longevity-dashboard and /solutions/longevity.
Educational only, not medical advice.
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