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HSA/FSA Eligible

Your advanced health check

Every year. Starting with 100+ lab tests detecting 1000+ conditions. Just $499 per year—$1.37 per day.

Start testing
100+ lab tests
Detect 1k+ diseases
2x per year
Track for life
No insurance
Transparent cost

Testing is easy

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.
Start testingSee how it works

Monitor early indicators of 1000s of diseases

Establish your long-term baseline

Tracked for life

Monitor how your body changes

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

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
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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 U.S.

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
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.