Function Health vs TruDiagnostic (TruAge): which is better?

Function Health rates higher overall (9/10) in our analysis, but the right choice depends on your tier and budget.

Function Health vs TruDiagnostic (TruAge)

A side-by-side comparison of two AI tools on pricing, fit, and capability.

Longevity Membership

Epigenetic Age

9/10	Rating	8/10
health-coaches	Tier	biomarkers
Longevity Membership	Category	Epigenetic Age
From ~$365/yr	Starting price	From ~$229 one-time
Annual membership	Pricing model	One-time / retest
Cloud + lab draw	Deployment	At-home kit + lab
Yes	Self-serve	Yes
Anyone who wants wide twice-yearly lab coverage with AI summaries and clinician sign-off	Best for	People who want to measure whether their habits actually slow aging

Try Function Health Try TruDiagnostic

Our verdict

On balance, Function Health edges ahead at 9/10 — but if your budget, tier, or existing stack favors the other, it can be the better fit. Read both full reviews.