Hormones & thyroid
16 Biomarkers
- Thyroxine (T4) Free
- Thyroglobulin Antibodies (TgAb)
- Testosterone, Total
- Anti-Mullerian Hormone
- Thyroid-Stimulating Hormone (TSH)
Better health, together.
The people you love shouldn’t have to guess about their health either. Add them for just $340/year each, and each person chooses what to share.
Your family. One plan.
You don’t have to navigate health alone
You don’t have to navigate health alone
Health is something we share. With Family Plans, it’s easier than ever. After you join, add the people you love for less than they’d pay alone—full memberships for everyone, all on one bill.
Add a family member or friend for just $340/year Compare insights and track progress together Each person decides what they’re comfortable sharing 
Jordan
Organizer
Anthony
$365 $340/year
Carla
Full membership
You’re sharing with Anthony:
-
Biological Age -
Lab results - Clinician Notes
Monitor early indicators of 1000s of diseases
Establish your long-term baseline
Tracked for life
Monitor how your body changes
AnemiaGoutCeliac diseaseAddison's diseaseInsulin resistanceFatty liver diseasePancreatic cancerOvarian cancerSickle cell diseaseSjögren's syndromeDiabetesRheumatoid arthritisMold toxicity
HypogonadismLupusCoronary artery diseaseHypothyroidismAlzheimer's diseaseHemochromatosisPCOSChronic kidney diseaseHashimoto's thyroiditisProstate cancerLead toxicityGraves' disease
160+ lab tests chosen by top doctors
“The most powerful approach I’ve seen in my career. Uncompromising depth with no shortcuts.”
Cancer & other silent risks
34 Biomarkers
- Galleri® Multi-Cancer Test
- Prostate Specific Antigen (PSA), Total
- Rheumatoid Factor (RF)
- Mercury
Heart & metabolic
18 Biomarkers
- LDL Small
- Lipoprotein (a)
- Apolipoprotein B (ApoB)
- Omega-3 Total
- Insulin
Aging
34 Biomarkers
- Sex Hormone Binding Globulin (SHBG)
- DHEA-Sulfate
- Insulin-like Growth Factor (IGF-1)
- Homocysteine
- Vitamin D
Mental health & focus
20 Biomarkers
- Cortisol
- High-Sensitivity C-Reactive Protein (hs-CRP)
- Iron
- Ferritin
- Methylmalonic Acid (MMA) (B12 Proxy)
Function like Aimee
The cancer signals doctors missed
Function like Alan
From diabetes diagnosis to action
Function like Geoff
Finding prostate cancer after testing
Function like Catherine
You can't diet or exercise this away
Frequently asked questions
What is a Family Plan, and how does it work?
A Family Plan lets one member—the organizer—add loved ones (18+) to Function and pay for their memberships. Everyone gets their own full Function membership and account.
When do I actually get charged?
You’re charged when someone accepts your invite, and again each year at that person’s renewal. Your own membership renews separately on its own date.
Can I add a friend, or does it have to be family?
Anyone you’d like who’s 18 years or older. It doesn’t have to be family.
Will they see my results? Will I see theirs?
Everyone can choose what they’re comfortable sharing. Data Sharing is off by default for everyone, including the organizer.
Does the person I add get the same membership I have?
Yes. They get a full membership, with the same access to lab testing, clinician-reviewed notes, an Action Plan, and more.
What could cost you $15,000 is $365
Your health shouldn’t depend on insurance.
- 160+ lab tests across your whole body
- Tested 2x a year and on-demand
- Insights from top doctors and researchers
- Blood draws at 2,000+ labs or at your home or office
- SuppCo Buying Club for trusted supplements
- Clinicians review every result and flag issues
- Personalized steps to help you take action
- Members-only pricing on MRI & CT
- No insurance, transparent pricing
Function blows my mind. The experience, price, and clinician notes are all phenomenal.
Best money I have spent on healthcare.
Gold standard testing, on your schedule
Labs trusted by the medical community. Test at 2000+ Quest locations nationwide, or schedule an at-home blood draw with a licensed specialist.
75M+
75M+
Over 75 million results delivered to Function members
2,000+ lab test locations across the US
2,000+
2,000+
Or we’ll come to you—have a licensed specialist come to your home or office.
Built with the world's top doctors
Function’s Medical & Scientific Board
Mark Hyman, M.D.
Co-Founder and Chief Medical Officer.
Daniel Sodickson, M.D., PhD
Chief Medical Scientist at Function. Former Chief of Innovation in Radiology at NYU Langone.
JoAnn E. Manson, M.D., MPH, DrPH
Chief of Preventive Medicine at Brigham & Women's Hospital. Professor at Harvard.
Andrew Huberman, PhD
Professor of Neurobiology at Stanford School of Medicine.
Toby Cosgrove, M.D.
Former CEO of Cleveland Clinic. Top heart surgeon.
Azra Raza, M.D.
Top medical oncologist. Professor at Columbia University.
Eddie Chang, M.D.
Professor & Chair of Neurological Surgery at UCSF.
Luis A. Diaz, M.D.
Head of the Division of Solid Tumor Oncology at Memorial Sloan Kettering Cancer Center.
Yves Michel Duroseau, M.D.
Chair of the Department of Emergency Medicine at Lenox Hill Hospital.
Jen Ashton, M.D., M.S.
Double board-certified in OBGYN and Obesity Medicine; MS in Nutrition.
Jordan Shlain, M.D.
Primary care physician. Founder and Chairman of Private Medical.
Mark Hyman, M.D.
Co-Founder and Chief Medical Officer.
Daniel Sodickson, M.D., PhD
Chief Medical Scientist at Function. Former Chief of Innovation in Radiology at NYU Langone.
JoAnn E. Manson, M.D., MPH, DrPH
Chief of Preventive Medicine at Brigham & Women's Hospital. Professor at Harvard.
Andrew Huberman, PhD
Professor of Neurobiology at Stanford School of Medicine.
Toby Cosgrove, M.D.
Former CEO of Cleveland Clinic. Top heart surgeon.
Azra Raza, M.D.
Top medical oncologist. Professor at Columbia University.
Eddie Chang, M.D.
Professor & Chair of Neurological Surgery at UCSF.
Luis A. Diaz, M.D.
Head of the Division of Solid Tumor Oncology at Memorial Sloan Kettering Cancer Center.
Yves Michel Duroseau, M.D.
Chair of the Department of Emergency Medicine at Lenox Hill Hospital.
Jen Ashton, M.D., M.S.
Double board-certified in OBGYN and Obesity Medicine; MS in Nutrition.
Jordan Shlain, M.D.
Primary care physician. Founder and Chairman of Private Medical.
Not your average checkup
Standard checkup
Lab tests annually
160+
~26
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
160+
~26
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