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.

160+ lab tests

Multi-region MRIs (additional fees apply)

Tracked over time

Trusted by


industry experts.

Dr. Andrew Huberman
“I’ve been so impressed by Function."
Mari Llewellyn
"This is such a needed technology. As women, it can be challenging to figure out what’s wrong with our health."
Mark Hyman M.D.
"It's the most powerful approach to health I’ve seen in my career as a doctor."

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

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