Biological age (epigenetic) test
Claims to estimate how fast you’re aging from chemical marks on your DNA.
TypeBlood · Saliva
HowBlood or saliva sample.
How oftenOptional; sometimes repeated to track change.
Before—
WhoCurious, longevity-focused users.
A number that moves - but what does it mean?
Epigenetic clocks estimate age from chemical tags on your DNA. Results vary between tests and labs, and it’s unclear whether improving your score improves your health.
Is it right for you?
Worth considering if…
- You’re curious and understand the limits.
- You’re tracking lifestyle changes and want an extra data point.
- You’ll use proven markers like VO₂max and blood pressure alongside it.
A better option if…
- You want actionable longevity markers - VO₂max, grip strength, ApoB and HbA1c are more established.
How it’s measured
DNA methylation clock
Various commercial versions.
The full picture
What is it?
A test estimating biological age from DNA methylation.
What type of test is it?
A blood or saliva test.
What does it measure?
Methylation patterns at selected DNA sites.
Why might someone consider it?
Curiosity about aging.
Who is it most relevant for?
Longevity-focused users.
How is it performed?
A blood or saliva sample.
How often might it be considered?
Optional.
What can the result help you understand?
An estimate compared with your actual age.
What are its limitations?
Not standardised; results may not guide decisions.
What should it be viewed with?
Fitness, strength and standard biomarkers.
Where to get it
Through your provider
The simplest route - often covered when there’s a clear reason.
Lab services
e.g. Quest Diagnostics, Labcorp.
Direct-to-consumer panels
e.g. Function Health, InsideTracker.
Names are examples only, not endorsements. Your provider can often order the same test - and help interpret it.
Connected to
Questions to ask your provider
- Would this change anything I do?
Ziva Health
One test is a snapshot. Ziva shows the whole story.
Ziva brings your lab results, wearables and daily readings together - and Isabella tells you what’s changing and what to ask your provider next.
Refer Ziva to my provider / care team
Is your provider not on Ziva yet? Send them a link in under a minute - once they join, they’ll see your Biological age result alongside your other trends and get alerts directly.
Refer my providerAlready seeing your provider?
Bring your Ziva 30-day report to your next appointment - your Biological age result and daily trends in one view, so the conversation starts with the full picture.
Get my 30-day reportNo provider? Find a clinical partner
Being listed doesn’t mean everyone needs this test. Educational only — not medical advice. Results should be interpreted with a qualified clinician. ← Back to Know What to Test