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HSA/FSA Eligible
This holiday season
$499 → $365
Start testing
100+ lab tests
Detect 1k+ diseases
2x per year
Track for life
No insurance
Transparent cost
HSA/FSA Eligible
This holiday season
$499 → $365
Start Testing
100+ lab tests
Detect 1k+ diseases
2x per year
Track for life
Deliver Now
Transparent cost

The first membership for‍
lifelong health

01

100+ lab tests

Schedule at 2k+ Quest Diagnostics locations
02

Results explained

By top doctors and 1000s of hours of research

03

Follow your protocol

 Take action. Test again.
Gift FunctionGet Function

Monitor early indicators of 1000s of diseases

Establish your long-term baseline

Establish your long-term baseline

Tracked for life

Tracked for life

Monitor how your body changes

Monitor how your body changes

Addison’s disease
Anemia
Diabetes
Hashimoto’s thyroiditis
Chronic kidney disease
Lead toxicity
Insulin resistance
Mold toxicity
Ovarian cancer
Graves’ disease
PCOS
Sickle cell disease
Hemochromatosis
Fatty liver disease
Sjögren’s syndrome
Prostate cancer
Alzheimer’s disease
Hypogonadism
Gout
Lupus
Celiac disease
Coronary artery disease
Pancreatic cancer
Hypothyroidism
Rheumatoid arthritis
Lead toxicity
PCOS
Prostate cancer
Anemia
Diabetes
Hashimoto’s thyroiditis
Pancreatic cancer
Sjögren’s syndrome
Chronic kidney disease
Mold toxicity
Rheumatoid arthritis
Insulin resistance
Sickle cell disease
Graves’ disease
Hypogonadism
Lupus
Alzheimer’s disease
Hypothyroidism
Gout
Celiac disease
Coronary artery disease
Fatty liver disease
Hemochromatosis
Ovarian cancer
Addison’s disease
Anemia
PCOS
Insulin resistance
Mold toxicity
Graves’ disease
Pancreatic cancer
Hypothyroidism
Gout
Coronary artery disease
Sickle cell disease
Hypogonadism
Rheumatoid arthritis
Diabetes
Hemochromatosis
Prostate cancer
Lead toxicity
Hashimoto’s thyroiditis
Addison’s disease
Lupus
Fatty liver disease
Chronic kidney disease
Ovarian cancer
Sjögren’s syndrome
Celiac disease
Alzheimer’s disease
Rheumatoid arthritis
Hashimoto’s thyroiditis
Lupus
Prostate cancer
Hemochromatosis
Sickle cell disease
Celiac disease
Diabetes
Addison’s disease
Lead toxicity
Mold toxicity
Graves’ disease
Gout
Fatty liver disease
Coronary artery disease
Pancreatic cancer
Sjögren’s syndrome
Ovarian cancer
Hypogonadism
Hypothyroidism
Anemia
Chronic kidney disease
PCOS
Insulin resistance
Alzheimer’s disease
Gout
Sickle cell disease
Insulin resistance
Alzheimer’s disease
Lupus
Diabetes
Fatty liver disease
Lead toxicity
Hypogonadism
Sjögren’s syndrome
Ovarian cancer
Hypothyroidism
Celiac disease
PCOS
Anemia
Graves’ disease
Pancreatic cancer
Addison’s disease
Chronic kidney disease
Hashimoto’s thyroiditis
Coronary artery disease
Prostate cancer
Mold toxicity
Rheumatoid arthritis
Hemochromatosis
Anemia
Pancreatic cancer
Addison’s disease
Coronary artery disease
Lupus
Sickle cell disease
Diabetes
Fatty liver disease
Sjögren’s syndrome
Hypothyroidism
Chronic kidney disease
Graves’ disease
Ovarian cancer
Mold toxicity
Lead toxicity
Hashimoto’s thyroiditis
Rheumatoid arthritis
Hemochromatosis
Alzheimer’s disease
Gout
Prostate cancer
Celiac disease
PCOS
Insulin resistance
Hypogonadism
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100+ lab tests chosen by top doctors

“The most powerful approach I’ve seen in my career. Uncompromising depth with no shortcuts.”

Mark Hyman, M.D.
Mark Hyman, M.D.
Former Cleveland Clinic physician

Hormones
& thyroid

16 Biomarkers
Thyroxine (T4) Free
Thyroglobulin Antibodies (TgAb)
Testosterone, Total
Anti-Mullerian Hormone
Estradiol

Cancer & other
silent risks

34 Biomarkers
GRAIL Cancer Test
Prostate Specific Antigen (PSA), Total
Rheumatoid Factor (RF)
Mercury
Lead

Heart
& metabolic

18 Biomarkers
LDL Small
Lipoprotein (a)
Apolipoprotein B (ApoB)
Omega-3 Total
Insulin
Omega-6 Total

Aging

26 Biomarkers
Sex Hormone Binding Globulin (SHBG)
DHEA-Sulfate
Insulin-like Growth Factor (IGF-1)
Homocysteine
Vitamin D
Platelet Count

Mental health
& focus

36 Biomarkers
Cortisol
High-Sensitivity C-Reactive Protein (hs-CRP)
Iron
Ferritin
Methylmalonic Acid
MTHFR, DNA

+More
‍
All-in-one
lab testing

See all tests

The new standard for health

Health for a new, discerning generation
“I’ve been so impressed 
by Function.”
andrew
huberman
"I deeply believe in Function's mission."
Jay
Shetty
"Function helps me understand my own biology."
baya
voce
"Helped me finally identify imbalances and optimize my hormones."
Mari

Llewellyn
pause motion

Real people. Real results.

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

Gold standard
for lab testing

Labs trusted by the medical community. No startup labs. No unreliable at-home blood draws.

2,000+ lab test locations across the US

2,000
2k

50+ million results delivered to Function members

50M+

Not your average checkup

Personalized Protocol

Upload past results

No insurance needed

Hormones & fertility testing

Heavy metal & toxin testing

Metabolic & pancreatic testing

Heart testing beyond cholesterol

Nutrient/electrolyte testing

Autoimmunity testing

Thyroid testing

Access to advanced MRI & CT

Access to GRAIL cancer test

Access to Alzheimers & brain testing

Access to mold reactivity testing

Standard checkup

Built with the world's top doctors

Function’s Medical & Scientific Board
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.

Daniel Sodickson, M.D., PhD

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

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.

Mark Hyman, M.D.

Former Cleveland Clinic physician. CMO of Function Health.

What could cost you $15,000 is $499

Your health shouldn’t depend on insurance.
HSA/FSA Eligible

Function membership

$42

/day
Charged annually at $499
Join Function
160+ lab tests annually
Testing 2x/year and on-demand
Insights from top doctors and researchers
All-in-one for your whole body
Tracked in one secure place
Clinicians review every result and flag issues
Personalized protocol for instant action
Add advanced MRI and CT scans anytime
No insurance, transparent pricing
Join Function

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 UI, UX, price and clinician notes are all phenomenal.