Long live dads.

LONG LIVE DADS.

Celebrate your memories together, past and future—because when you help him unlock his health, the best are yet to come.

Live 100 healthy years.

It’s not just about living longer, but living better—without missing a moment. Insist on not just counting the years, but making the years count. Get 100+ lab tests and personalized insights tracked over your lifetime.

100+ lab tests

Advanced imaging (additional fees apply)

Tracked over time

Trusted by


industry experts.

Mark Hyman, M.D.
Former Cleveland Clinic physician, 15x NY Times best-selling author, co-founder and Chief Medical Officer of Function Health.
Azra Raza, M.D.
Professor of Medicine at Columbia University, medical oncology specialist.
Daniel Sodickson, M.D., PhD
Chief of Innovation and Professor of Radiology at NYU Medical School, pioneered parallel MRI and AI-driven imaging technology.
Toby Cosgrove, M.D.
Former CEO of Cleveland Clinic, globally-recognized leading heart surgeon.
Andrew Huberman, PhD
Professor of Neurobiology at Stanford School of Medicine and host of the Huberman Lab podcast.
Eddie Chang, M.D.
Professor and Chair of Neurological Surgery at UCSF, internationally recognized neuroscientist.
JoAnn E. Manson, M.D., MPH, DrPH
Chief of Preventive Medicine at Brigham and Women’s Hospital, Professor at Harvard Medical School.
Luis A. Diaz, M.D
Head of the Division of Solid Tumor Oncology at Memorial Sloan Kettering Cancer Center, and leader in cancer genetics.
Yves Michel Duroseau, M.D.
Chair of the Department of Emergency Medicine at Lenox Hill Hospital.

A membership that puts your health in your hands.

100+ lab tests yearly
With over 100 advanced lab tests, followed by a 60+ test follow-up after 3-6 months, it’s 5x more lab testing than the average physical.
Whole-body testing
Comprehensive lab testing covering your heart, hormones, metabolic, stress, autoimmunity, toxins, reproductive health, and much more.
Personalized insights
Get data-driven insights from the world’s top doctors based on your unique results.
Tracked over time
Seamlessly track your lab results all in one secure place over time. Monitor how your health evolves as you do.

Testing is easy

Step 1
Quick booking
Secure a time slot at any of Quest Labs 2,000+ locations across the US.
Step 2
15 minute lab visits
Function includes two short annual lab visits to test 100+ biomarkers.
Step 3
Take action. Test again.
Turn your results into actionable insights with expert review, then test again.

Take charge of your health starting with knowledge

What does a Function membership include?
Who needs Function?
How does Function keep my information safe?
Is insurance involved?