Function Membership vs TruDiagnostic TruAge COMPLETE Epigenetic Test
Specs, prices, editor verdict, and who should buy which, compared side by side.
Lifespan Vault earns an affiliate commission when you buy through links on this page, at no extra cost to you. It does not change our rankings or our verdicts.
Function Membership (premium, $365/yr) vs TruDiagnostic TruAge COMPLETE Epigenetic Test (premium, $499 to $849/test). Different tools for different jobs (see the per-product details below).
Compared on 1 shared spec · cross-category comparison (ai software vs diagnostic).
We have not scored these two head to head, so this page does not name a winner. The Function Membership starts at $365/yr and the TruDiagnostic TruAge COMPLETE Epigenetic Test at $499/test. The per-buyer recommendations below say who each one suits.
Side-by-side specs
| Spec | Function Membership | TruDiagnostic TruAge COMPLETE Epigenetic Test |
|---|---|---|
| price | $365/yr | $499 to $849/test |
| subscription | $365/yr | Subscribe & Save marketed at ~$249 per test (quarterly retests, plan pricing); TruAge + TruHealth combo $849 |
Function Membership also publishes: biomarkers, frequency, clinician review, delivery
TruDiagnostic TruAge COMPLETE Epigenetic Test also publishes: service type, delivery model, clocks, single test, add on panels, sample type, turnaround, methodology, affiliate network
Who should buy which
Anyone running peptides, optimizing hormones, on a longevity protocol, or just wanting twice-yearly comprehensive labs at a fixed price.
You already get comprehensive labs through your concierge clinic, or you only want the cheapest single-panel test (go InsideTracker).
Longevity-focused buyers running serious anti-aging protocols who want validated pace-of-aging tracking, and biomarker-literate users adding epigenetic data to a broader monitoring stack.
You want actionable health recommendations (Function Health or InsideTracker beat it on that), you won't commit to longitudinal retests (single-point readings are noisy), or you're shopping for vanity rather than research-grade data.
Go deeper
Frequently asked
Which is better, the Function Membership or the TruDiagnostic TruAge COMPLETE Epigenetic Test?
We have not scored these two head to head, so this page does not name a winner. The Function Membership starts at $365/yr and the TruDiagnostic TruAge COMPLETE Epigenetic Test at $499/test. The per-buyer recommendations below say who each one suits.
How much do they cost?
Function Membership: $365. TruDiagnostic TruAge COMPLETE Epigenetic Test: $499 to $849. Prices are verified against the manufacturer; check the live links for current pricing.
Who should buy which one?
Function Membership: Anyone running peptides, optimizing hormones, on a longevity protocol, or just wanting twice-yearly comprehensive labs at a fixed price. TruDiagnostic TruAge COMPLETE Epigenetic Test: Longevity-focused buyers running serious anti-aging protocols who want validated pace-of-aging tracking, and biomarker-literate users adding epigenetic data to a broader monitoring stack.
The Longevity Gear Buyer's Checklist
The specs that actually decide whether a sauna, cold plunge, red light panel, or smart ring is worth it, plus the real price range for each. Get the free PDF, plus one weekly email on the gear worth buying.

