160+ biomarkers · clinician-reviewed · tracked for life

Health, with full resolution.

Get the labs Function gives you, the longitudinal AI Rejuve built, and a board-certified physician who actually knows your name. One membership. Decoded for life.

4.9 · 14,200+ members
NYTimes Bloomberg WSJ Wired
ApoB · optimal
Down 14 mg/dL since Q1 — protocol working.
hsCRP · elevated
Recommend dietary review with Dr. Patel this week.
VO₂ max · 92nd %ile
Top decile for your age & sex cohort.
Live · last sync 3m ago
Cohort: F · 38 · 2026 Q2
87 ApoB hsCRP HbA1c Vit D Cortisol TSH Ferritin
87
Score
Health Intelligence Index
Your body is operating in the top 13% of your cohort.
Heart
94
Metab
88
Inflam
71
Hormone
85
Sleep
92
Trusted by clinicians at
Cleveland Clinic Mayo UCSF Mount Sinai Johns Hopkins Stanford
01 · Biomarker Library

160+ markers across 5 systems. Every result, contextualized for you.

Function tells you what the number is. Rejuve Function tells you why it changed, what to do next, and which physician to talk to.

02 · Health Intelligence

A dashboard built for longitude, not just labs.

The state-of-the-art component every health platform wishes it had. Real-time signal fusion across labs, wearables, imaging, and your physician's notes.

Health Intelligence Index
87 +4 this quarter
Composite of 160+ markers, weighted by clinical risk.
87
+4 vs Q1
Heart
94
Metabolic
88
Hormone
85
Inflam
71
24-Month Trajectory
Your biomarkers, on the way to optimal
ApoB (mg/dL)
76 ↓ 14
HbA1c (%)
5.1 ↓ 0.4
VO₂ max
48 ↑ 6
Sleep efficiency
94% ↑ 8
Your Physician
PA
Dr. Priya Anand
Internal Medicine · Longevity
MD · Stanford 14 yrs A4M Cert
"Your inflammation is the only outlier — and it's seasonal. Let's revisit in 6 weeks."
Active Protocol
3 actions, prioritized by impact
Updated 2 hours ago by Dr. Anand
Omega-3 · 2g daily
Targets hsCRP elevation · 8 wks
High impact
Sleep window: 10:30–6:30
Consistent ±15min · cortisol shift
Daily
Zone 2 cardio · 4×/wk
45min, HR 130–145 · VO₂ max
Wearable-tracked
Live wearables
Resting HR
52 bpm
HRV
68 ms
Sleep
7h 42m
Recovery
94%
Attention needed
hsCRP trending up 3 quarters
Schedule call with Dr. Anand · Next opening Wed 2:30pm
Full-body MRI
98.4%
Clean · 0 findings
AI Companion · Atlas
A
"Your ApoB just hit Function's optimal range. Want me to draft a note for Dr. Anand celebrating that win?"
03 · The honest comparison

What Function gives you. What Rejuve adds. What you actually deserve.

We respect Function — they raised the bar. So we raised it again with longitudinal AI, named physicians, and lifelong protocols.

Standard Annual
Function Health
Rejuve Function
Biomarkers tested
~20
160+
160+  + wearable fusion
AI longitudinal trends
Basic
 Predictive · 24-mo
Named physician (yours)
 Board-certified, lifelong
Active protocols (not just numbers)
Read-only
 Personalized, tracked
Imaging included (MRI · DEXA)
Add-on
 Annual, included
GLP-1 weight management
 Integrated · Rejuve Meds
Annual cost
$300+ (after insurance)
$365
$499
04 · Membership

One membership. Three depths.

Start with labs and AI. Add a physician when you want one. Add imaging and meds when you're ready.

Essentials
Match Function. Stay tracked.
$349/yr
Or $35/mo · cancel anytime
  • 160+ biomarkers, 2× per year
  • AI longitudinal dashboard
  • Wearables integration (Apple, Oura, Whoop)
  • Atlas AI companion
  • Self-serve protocols
Choose Essentials
Concierge
Imaging, meds, longevity.
$1,899/yr
Annual only · waitlist
  • Everything in Function
  • Annual full-body MRI
  • DEXA + VO₂ max testing
  • GLP-1 program (Rejuve Meds)
  • Physician-on-call (24/7)
  • Family member add-ons
Join waitlist
05 · Medical Board

Built with the clinicians we'd want for ourselves.

Independent advisors who shape every protocol, biomarker reference range, and AI recommendation.

SA
Dr. Sarah Aminzadeh
Internal Medicine
Stanford School of Medicine
MK
Dr. Marcus Kobayashi
Cardiology · Lipidology
UCSF Cardiovascular Institute
JM
Dr. Joanna Mehta
Endocrinology
Mount Sinai Medical Center
DR
Dr. David Rivera
Preventive Medicine
Cleveland Clinic Foundation
06 · Member Stories

"I've done Function for two years. What Rejuve added is the person — Dr. Anand caught my thyroid drift in a 12-minute call before any number flagged. That's the difference."

EW
Elena Whitmore
Founder · 38 · member since 2024

The only health platform that grows with you.

Start with 160+ biomarkers. Add a physician. Add imaging. Stay decoded for the rest of your life.