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Head-to-head buyer guide

Function Membership vs Prenuvo Whole-Body MRI

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

By Ryan · Founder
Updated Sep 30, 2026

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.

Quick verdict

Function Membership (premium, $365/yr) vs Prenuvo Whole-Body MRI (ultra premium, $1,199 to $4,999/test). Different tools for different jobs (see the per-product details below).

Compared on 0 shared specs · 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
Prenuvo whole-body MRI scanner
Prenuvo

Whole-Body MRI

The full-body MRI scan that became the longevity cocktail-party flex - and the diagnostic everyone debates.

PRICE
$1,199 to $4,999/test
The verdict

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 Prenuvo Whole-Body MRI at $1,199/test. The per-buyer recommendations below say who each one suits.

Who should buy which

Pick the 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 Prenuvo Whole-Body MRI if

Buyers with family history of cancer, anyone over 50, those who want imaging-based screening as part of their longevity baseline.

Skip if

You're prone to anxiety over uncertain findings, or you don't have $1,199 to $4,999 to spend on a screening test, depending on tier and city.

Go deeper

FULL REVIEW
Read the Function Membership review →
FULL REVIEW
Read the Prenuvo Whole-Body MRI review →

Frequently asked

Which is better, the Function Membership or the Prenuvo Whole-Body MRI?

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 Prenuvo Whole-Body MRI at $1,199/test. The per-buyer recommendations below say who each one suits.

How much do they cost?

Function Membership: $365. Prenuvo Whole-Body MRI: $1,199 to $4,999. 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. Prenuvo Whole-Body MRI: Buyers with family history of cancer, anyone over 50, those who want imaging-based screening as part of their longevity baseline.

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