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HSA/FSA Eligible

Check your health.

Every year. Starting with 160+ lab tests detecting 1000+ conditions. Just $365 per year—$1 per day. Concierge blood draws at home or in the office.

Start testing
160+ lab tests
Total each year
Test at home
In select areas
$1 per day
$365 per year

Skip the lab.

‍We’ll come to you.‍

The same comprehensive testing— now with concierge blood draws available in select areas. No commute, no waiting room, just results.

  • Schedule: Pick a 2-hour window that works for you
  • Test: Meet your specialist at the location you selected
  • Get results: Results will be ready around 2 weeks after your appointment

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Testing is easy

01

160+ lab tests

Schedule at 2K+ Quest Diagnostics locations — or skip the lab. We’ll come to you.
02

Results explained

By top doctors and 1000s of hours of research
03

Follow your plan

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

Hypothyroidism
Hashimoto’s thyroiditis
PCOS
Pancreatic cancer
Lupus
Ovarian cancer
Hemochromatosis
Sjögren’s syndrome
Gout
Mold toxicity
Anemia
Rheumatoid arthritis
Fatty liver disease
Diabetes
Prostate cancer
Hypogonadism
Chronic kidney disease
Celiac disease
Insulin resistance
Addison’s disease
Graves’ disease
Alzheimer’s disease
Coronary artery disease
Sickle cell disease
Lead toxicity
Insulin resistance
Anemia
Fatty liver disease
Lead toxicity
Sjögren’s syndrome
Graves’ disease
Chronic kidney disease
Addison’s disease
Hypothyroidism
Sickle cell disease
Celiac disease
Coronary artery disease
Hashimoto’s thyroiditis
Hemochromatosis
Prostate cancer
Mold toxicity
PCOS
Ovarian cancer
Hypogonadism
Pancreatic cancer
Lupus
Diabetes
Alzheimer’s disease
Rheumatoid arthritis
Gout
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
Lead toxicity
Fatty liver disease
Hypothyroidism
Hemochromatosis
Graves’ disease
Prostate cancer
Lupus
Anemia
Pancreatic cancer
Celiac disease
Hashimoto’s thyroiditis
Diabetes
Alzheimer’s disease
Ovarian cancer
Rheumatoid arthritis
PCOS
Sjögren’s syndrome
Sickle cell disease
Mold toxicity
Hypogonadism
Addison’s disease
Insulin resistance
Chronic kidney disease
Gout
Coronary artery disease
Hemochromatosis
Hypogonadism
Ovarian cancer
Sickle cell disease
PCOS
Hypothyroidism
Anemia
Lupus
Graves’ disease
Fatty liver disease
Pancreatic cancer
Insulin resistance
Alzheimer’s disease
Addison’s disease
Celiac disease
Sjögren’s syndrome
Mold toxicity
Gout
Lead toxicity
Chronic kidney disease
Diabetes
Hashimoto’s thyroiditis
Rheumatoid arthritis
Prostate cancer
Coronary artery disease
Graves’ disease
Chronic kidney disease
Sickle cell disease
Gout
Hemochromatosis
Anemia
Prostate cancer
Sjögren’s syndrome
PCOS
Hashimoto’s thyroiditis
Addison’s disease
Lupus
Insulin resistance
Pancreatic cancer
Hypothyroidism
Fatty liver disease
Lead toxicity
Mold toxicity
Diabetes
Coronary artery disease
Alzheimer’s disease
Hypogonadism
Ovarian cancer
Rheumatoid arthritis
Celiac disease
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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
Galleri® Multi-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 (MMA) (B12 Proxy)
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

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. Established partners. Consistent, reliable results.
Explore testing options

2,000+ lab test locations across the US

2,000
2k

Over 75+ million results delivered to Function members

75M+

Not your average checkup

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

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.

This Function Day, invest in health, not stuff.

For a limited time, get two years upfront of testing, insights, and tracking. 
All new members get up to $250 in credits.
HSA/FSA Eligible

2 years of Function

$365

$250/per year

*Billed upfront at $499 for 2 years of annual membership.
2 years of Function - $4991 year of Function - $365
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
Access to MRI and CT
No insurance, transparent pricing
FUNCTION DAY • get 2 years for $499
Credits toward Annual MRI and add-on lab tests*
*Terms and conditions apply. Non-member MRI regularly priced at $999.
$200
credit on Annual MRI
$50
credit on Add-On Tests
Join Function
*Terms and conditions apply. Non-member MRI regularly priced at $999.
FUNCTION DAY • all members
Join Function