Hormones & thyroid
- Thyroxine (T4) Free
- Thyroglobulin Antibodies (TgAb)
- Testosterone, Total
- Anti-Mullerian Hormone
- Thyroid-Stimulating Hormone (TSH)

160+ lab tests
Total each year
Whole body
Tested 2x per year
$1 per day
$365 per year
“The most powerful approach I’ve seen in my career. Uncompromising depth with no shortcuts.”
Health for a new, discerning generation
“I’ve been so impressed by Function.”
Andrew Huberman
"Function helps me understand my own biology."
Baya Voce
"I deeply believe in Function's mission."
Jay Shetty
"Helped me finally identify imbalances and optimize my hormones."
Mari Llewellyn
Labs trusted by the medical community. Established partners. Consistent, reliable results.
2,000+ lab test locations across the US
2,000+
2,000+
Over 75 million results delivered to Function members
75M+
75M+
Standard checkup
Lab tests annually
Personalized action plan
Upload past results
No insurance needed
Every 6 months
Hormones & fertility testing
Heavy metal & toxin testing
Metabolic & pancreatic testing
Heart testing beyond cholesterol
Nutrient/electrolyte testing
Autoimmunity testing
Thyroid testing
Access to MRI & CT
Access to Galleri® Multi-Cancer Test
Access to Alzheimers & brain testing
Access to mold reactivity testing
Standard checkup
Lab tests annually
Personalized action plan
Upload past results
No insurance needed
Every 6 months
Hormones & fertility testing
Heavy metal & toxin testing
Metabolic & pancreatic testing
Heart testing beyond cholesterol
Nutrient/electrolyte testing
Autoimmunity testing
Thyroid testing
Access to MRI & CT
Access to Galleri® Multi-Cancer Test
Access to Alzheimers & brain testing
Access to mold reactivity testing
Function’s Medical & Scientific Board

Former Cleveland Clinic physician. CMO of Function Health.

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.

Chair of the Department of Emergency Medicine at Lenox Hill Hospital.

Primary care physician, Founder & Chairman of Private Medical.
Your health shouldn’t depend on insurance.
This is the most comprehensive lab testing I have ever had. I am thrilled to know more about my health and how to improve it.
Best money I have spent on healthcare.
Function blows my mind. The experience, price, and clinician notes are all phenomenal.