Recommended by JJ Virgin
JJ has secured limited early access to Function for her community.
“Good health is a choice, and it starts with action. Function gives you the tools to take control of your long-term health with advanced whole-body testing and tracking. It’s not just about feeling better today, it’s about crafting a personalized strategy to age optimally and feel great for years to come. Function offers a roadmap to living a long, vibrant life.” - JJ Virgin

Testing is easy
Backed by thousands of hours of research
No insurance needed
Transparent pricing
Heart testing beyond cholesterol
Autoimmunity testing
Hormones & fertility testing
Nutrient & electrolyte testing
Access to cancer testing
Standard checkup
As someone navigating an autoimmune condition, it's been such a relief to finally have a clear, visual way to track what’s going on in my body—and actually understand it.

Early detection has given me this amazing gift of extra years, probably extra decades, with my family.

After 10 years of dealing with a health issue, 5 years of trying to get doctors to run more in-depth tests, Function finally helped me uncover the root cause.

Real people. Real results.



