Unlock your exclusive Equinox member rate. 160+ advanced lab tests. Track the proof behind your training, from heart and hormones to immunity and more.
You say you’re at the apex of performance.
Prove it.
*Regularly $365/year. Offer powered by Equinox. Open up your EQX+ App and navigate to Equinox Circle to redeem this offer.
By top doctors and 1000s of hours of research













Chief of Preventive Medicine at Brigham & Women’s Hospital. Professor at Harvard

Professor of Neurobiology at Stanford School of Medicine

Former CEO of Cleveland Clinic. Top heart surgeon.

Chief of Innovation at NYU Langone. Pioneer of AI-driven MRI.

Top medical oncologist. Professor at Columbia University.

Professor & Chair of Neurological Surgery at UCSF.

Head of the Division of Solid Tumor Oncology at Memorial Sloan Kettering Cancer Center.

Former Cleveland Clinic physician. CMO of Function Health.
Frequently asked questions
Anyone who wants to take control of their health—or needs a reason to start.
Give it to:
Your body, mind, and healthcare system should function. But corrupted food systems, chronic stress, and outdated practices can push you toward dysfunction. We exist to change that. We give you insights across your body—heart, hormones, thyroid, nutrients, toxins, inflammation, and more—so you can stay in control.
Yes. Employers can fully or partially fund Function memberships as an employee wellness benefit.
Function is available in most states through Quest, allowing employees to schedule tests where it’s most convenient.
Biomarkers are measurable signals in your body—like a hormone, protein, or vital sign—that can reflect shifts in your health even before symptoms show up. For example, elevated Apolipoprotein B levels can be linked to increased heart disease risk. Tracking biomarkers helps you spot changes early, so you can take action sooner.
You’ll get detailed reports* on enrollment, engagement, test completion, biomarker trends, and overall population health, so you can track impact over time. *This data is aggregated and de-identified for privacy.