Focus	Testing model
What It Covers	An epigenetic clock from a blood or saliva sample A blood-marker composite age from standard labs A proteomic or organ-specific age in newer products A pace-of-aging score Repeat testing at six or twelve months A dashboard tying the score to lifestyle advice
Typical Cost	$100 to $1,000 per test
Evidence Level	Early: clocks predict risk across populations, individual results vary between tests and between clocks, and no trial shows that treating to a clock target improves outcomes
Regulatory Status	Mostly laboratory-developed or consumer wellness tests, not FDA-cleared diagnostics
Watchouts	No confidence range or test-retest variability reported A score attributed to a product the seller also markets The clock switched between baseline and follow-up The result framed as a diagnosis
Questions To Ask	Which clock is this and what population was it trained on? How much does the result move on retest with no changes? Will the same clock be used at follow-up? What would a five-year drop in this number mean clinically?

Parallel Coverage

Related Resources

This profile connects back into the article, glossary, and FAQ layers so overlapping coverage stays discoverable instead of fragmented.

Article

Biological Age Testing Explained

How epigenetic clocks and other biological age tests work, what they can tell you, and where their limits are.

Article

What Is Biological Age?

Biological age estimates how your body is aging from measurable signals. It adds context to your birth year, but no single score can tell you how long you will live.

Glossary Term

Epigenetic Clock

A biological age measurement tool that uses patterns of DNA methylation, chemical modifications to DNA that change predictably with age, to estimate a person's biological age.

← Back to Longevity Clinics and Programs