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Independent·Affiliate-disclosed·Spec-verified·Updated August 2, 2026
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Head-to-head buyer guide

Function Health Function Membership vs TruDiagnostic TruAge COMPLETE Epigenetic Test

Specs, prices, editor verdict, and who should buy which - compared side-by-side.

By Ryan · Founder
Updated May 29, 2026
Quick verdict

Function Health Function Membership (premium, $365/yr) vs TruDiagnostic TruAge COMPLETE Epigenetic Test (premium, $499–$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).

Function Health membership - lab scans + biomarker visualization
Function Health

Function Membership

The platform that took the $5,000 executive physical and turned it into a $365/year membership - and made it better.

PRICE
$365/yr
TruDiagnostic TruAge Complete epigenetic age test kit
TruDiagnostic

TruAge COMPLETE Epigenetic Test

The biological-age epigenetic test the longevity crowd actually uses - and the only consumer-accessible kit running multiple validated clocks (DunedinPACE, Horvath, OMICmAge) in one panel.

PRICE
$499–$849/test
SCORE
8.6 / 10
View at TruDiagnostic
The verdict

These are close picks. Both score in the same range. The right call depends on buyer profile - read the per-buyer recommendations below.

Side-by-side specs

SpecFunction Health Function MembershipTruDiagnostic TruAge COMPLETE Epigenetic Test
price$365/yr$499–$849/test
subscription$365/yrSubscribe & Save marketed at ~$249 per test (quarterly retests, plan pricing); TruAge + TruHealth combo $849

Function Health Function Membership also publishes: biomarkers, frequency, clinicianReview, delivery

TruDiagnostic TruAge COMPLETE Epigenetic Test also publishes: serviceType, deliveryModel, clocks, singleTest, addOnPanels, sampleType, turnaround, methodology, affiliateNetwork

Who should buy which

Pick the Function Health Function Membership if

Anyone running peptides, optimizing hormones, on a longevity protocol, or just wanting twice-yearly comprehensive labs at a fixed price.

Skip if

You already get comprehensive labs through your concierge clinic, or you only want the cheapest single-panel test (go InsideTracker).

Pick the TruDiagnostic TruAge COMPLETE Epigenetic Test if

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.

Skip if

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

FULL REVIEW
Read the Function Health Function Membership review →
FULL REVIEW
Read the TruDiagnostic TruAge COMPLETE Epigenetic Test review →

Frequently asked

Which is better, the Function Health Function Membership or the TruDiagnostic TruAge COMPLETE Epigenetic Test?

They are closely matched on our scoring, so the right pick comes down to your priorities. The verdict and spec table above compare them on price, features, and who each one suits.

How much do they cost?

Function Health 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 Health 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.

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