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Epigenetic age testing
Estimates biological age from DNA methylation patterns.
What happens
A saliva or blood sample is analysed for DNA methylation at hundreds of thousands of sites. An algorithm — Horvath, GrimAge, DunedinPACE and others — converts that pattern into an estimated biological age or a pace of ageing.
How to read the result
The useful output is the trend across repeated tests on the same platform, not the single number. Clocks trained on mortality data, such as GrimAge and DunedinPACE, correlate with outcomes more strongly than first-generation clocks.
Where it stops
Results vary between laboratories and between clocks, and a single test cannot be compared with a friend's result from another provider. No clock has been shown in a trial to change outcomes when it is used to steer treatment.
Before you book
Three questions to ask
- 01Which clock and which laboratory, and will repeat tests use the same one?
- 02What is the test–retest variation on your platform?
- 03What would you change in my plan based on the result?
Providers
Registry entries offering epigenetic age testing
No documented provider for this procedure yet.
We only record a procedure when a provider states it in their own materials. If you know a clinic offering it, tell us and we will check.