Most people visit a doctor only when something goes wrong. By that point, the damage is already done. Function Health flips that entire model on its head. It gives you deep, data-driven insight into your body before problems become serious.
I have spent time researching this platform inside and out. In this guide, I will break down everything you need to know about Function Health, including what it tests, who backs it, what it costs, and whether it is actually worth your money.
What Is Function Health?
Function Health is an American company headquartered in Austin, Texas. It offers a membership-based health platform built around comprehensive lab testing. The company was founded in 2021 by Dr. Mark Hyman, Jonathan Swerdlin, Daniel Swerdlin, Pranitha Patil, Mike Nemke, and Seth Weisfeld.
The core idea is straightforward. Instead of waiting for symptoms, you proactively test over 100 biomarkers in your blood and urine. You receive AI-powered reports and clinician insights. You then use that data to make smarter decisions about your diet, lifestyle, and long-term health.
TIME magazine named Function Health one of the 100 Most Influential Companies of 2025. That recognition says a lot about where preventive health is heading.
Is Function Health an American Company?
Yes, Function Health is fully an American company. It is headquartered in Austin, Texas, and operates under U.S. healthcare regulations. The company partners with Quest Diagnostics, one of the largest diagnostic testing networks in the country, to process its lab work at certified facilities across the United States.
The company raised a $298 million Series B round in November 2025, led by Redpoint Ventures, valuing it at $2.5 billion. Earlier, in June 2024, Andreessen Horowitz (a16z) led a $53 million Series A round. These are among the most respected venture capital firms in American tech and healthcare.
What Does Function Health Include?
This is the question most people ask first. Function Health membership gives you access to a wide range of tests across multiple health categories.
Here is a breakdown of what the standard membership covers:
| Category | Tests Included |
| Heart Health | Cholesterol panels, ApoB, Lp(a), hs-CRP |
| Hormones | Testosterone, estrogen, cortisol, DHEA-S, thyroid |
| Metabolic Health | Fasting insulin, HbA1c, blood sugar, HOMA-IR |
| Nutrient Levels | Vitamin D, B12, magnesium, zinc, ferritin |
| Organ Function | Liver enzymes, kidney markers, CBC |
| Cancer Markers | PSA, CA-125, CEA, and others |
| Immune Health | White blood cell count, inflammation markers |
| Urine Tests | 21 urine-based tests |
The standard plan starts with an initial panel of over 100 tests. Three to six months later, you get a follow-up panel of 60+ retests to track how your numbers are changing over time.
Members also have the option to add a full-body MRI scan for an additional $499. This became possible after Function acquired Ezra in May 2025. Before the acquisition, that same MRI cost around $1,495 elsewhere. The scan takes only 22 minutes using FDA-cleared AI technology.
In November 2025, Function also launched a Heart and Lungs CT add-on priced at $349. This screens for cardiovascular risk and lung health in a single, three-minute low-dose scan.
What Celebrities Are in Function Health?
Function Health has attracted serious celebrity attention. This is not just about endorsements. Many of them are actual investors with real money in the company.
Celebrity and athlete investors in Function Health include Matt Damon, Kevin Hart, Zac Efron, Pedro Pascal, Jay Shetty, Blake Griffin, Colin Kaepernick, and Jimmy Rollins. Joel Embiid’s investment firm, Embiid Ventures, also participated in the funding round.
Beyond celebrities, the company counts powerful institutional names among its investors. Andreessen Horowitz, Ari Emanuel (CEO of Endeavor), and Dr. Casey Means have all backed the platform. Former Oura CEO Harpreet Singh Rai is also an investor.
Co-founder Dr. Mark Hyman brings enormous credibility to the brand. He is the founder of the Cleveland Clinic Center for Functional Medicine and has over 2.6 million Instagram followers. His audience was a big reason why Function Health grew a 300,000-person waitlist by 2023.
This level of celebrity and institutional backing is not just good marketing. It signals genuine confidence in the product’s direction.
The Problem With Traditional Healthcare in America
The standard American healthcare system is reactive. You show up sick. A doctor runs basic tests. You get a diagnosis and a prescription.
The issue is that many serious conditions, including heart disease, diabetes, and certain cancers, develop slowly and silently. By the time you feel symptoms, significant damage may already be present.
According to the CDC, heart disease is the leading cause of death in the United States, accounting for about one in every five deaths. Yet most people have never tested their ApoB, Lp(a), or fasting insulin. These are powerful early markers of cardiovascular and metabolic risk.
Function Health was built to close that gap. It gives you the kind of testing that was previously available only to elite athletes, wealthy executives, or patients at specialized clinics.
How Function Health Works: Step by Step
Getting started with Function Health is simple. Here is how the process works from beginning to end.
Step 1: Sign up and activate your membership. The annual membership costs $499 per year. You create your account and complete a health history intake.
Step 2: Visit a lab near you. Function partners with Quest Diagnostics locations nationwide. You visit a draw site near you. The process uses about five to ten vials of blood and a urine sample.
Step 3: Receive your results. Results typically arrive within 24 to 72 hours. You access them through the Function app or web dashboard. Each biomarker comes with an explanation, an optimal range, and context for what the number means.
Step 4: Review clinician insights. Function’s team of licensed clinicians reviews your results and provides a personalized summary. This is a structured, expert review of your data written specifically for you.
Step 5: Track changes over time. You repeat selected tests three to six months later. Watching trends over time is where the real value appears.
Function Health Pricing: Is It Worth It?
The standard membership costs $499 per year. That works out to roughly $41 per month. Individual lab tests at standard market pricing can cost $300 to $1,000 or more depending on the panels selected. Function bundles 100+ tests into one annual price, which makes it significantly more affordable for most people.
Here is a pricing comparison to give you context:
| Service | Cost | Tests Included |
| Function Health | $499/year | 100+ blood and urine tests |
| Standard Quest Diagnostics panel | $300 to $800+ | 20 to 40 tests |
| Executive health checkup (private clinic) | $2,000 to $5,000 | Varies widely |
| Add-on full-body MRI (via Ezra) | $499 | Full body scan, 22 minutes |
| Heart & Lungs CT add-on | $349 | Cardio and lung screening |
Some employers and insurers now offer Function Health at a discount. John Hancock became the first life insurer to offer subsidized access through its Vitality PLUS program. Equinox members get their first year at $249. Insurance brokerage Higginbotham added Function to its employee well-being portfolio at $334 annually.
Mistakes People Make When Using Function Health
I want to be direct about a few things people get wrong with this platform.
Treating it as a diagnosis tool. Function Health gives you data. It does not diagnose conditions. If your results show an abnormal marker, you still need to consult a licensed physician for proper diagnosis and treatment.
Ignoring the follow-up panel. Many members complete their first test and never return. The real value is in the second round of testing, which shows how your lifestyle changes are impacting your biomarkers over time.
Overlooking the context behind numbers. A single biomarker out of range does not mean something is seriously wrong. Many factors influence lab results, including stress, sleep, hydration, and time of day. Always review your results with a clinician before drawing conclusions.
Not reading the clinician summaries. Function provides detailed written insights with every result. These are actionable explanations written by real healthcare professionals. Many members skip them entirely. That is a costly mistake.
Pro Tips to Get the Most From Your Membership
Here are a few practical insights that will help you maximize the value of Function Health.
Be consistent with testing timing. Try to complete your follow-up tests around the same time of day and under similar lifestyle conditions as your first draw. This gives you cleaner, more comparable data over time.
Use your results to have smarter conversations with your doctor. Print your Function report and bring it to your next appointment. Many physicians appreciate the comprehensive data and can act on it within your existing care plan.
Pair your biomarker data with a wearable device. Tools like Oura Ring or WHOOP track sleep, heart rate variability, and recovery. Combining that data with your Function results gives you a much more complete health picture.
Check the <u>Function Health membership page on their official website</u> for updated pricing, add-ons, and availability before signing up.
Function Health Growth: The Numbers Tell a Powerful Story
The growth of this platform reflects how quickly Americans are embracing proactive health monitoring.
In 2023, Function Health completed more than three million lab tests. By May 2024, the company had around 40,000 subscribers. By May 2025, that number climbed to over 200,000 subscribers. The company went from adding about 110 subscribers per day in early 2024 to over 800 subscribers per day in early 2025.
Sacra estimates Function Health hit a $100 million revenue run rate in February 2025, representing 450% year-over-year growth. That kind of acceleration in the healthcare space is nearly unheard of.
The McKinsey 2025 Future of Wellness survey projects the U.S. wellness market will reach $500 billion and grow 4 to 5% annually. Function Health is squarely positioned at the center of that growth trend.
In February 2025, the company also announced a partnership with the National Basketball Players Association (NBPA), making Function its exclusive biomarker testing partner for active and retired NBA players.
Frequently Asked Questions
Q1: What celebrities are in Function Health?
Function Health has celebrity investors including Matt Damon, Kevin Hart, Zac Efron, Pedro Pascal, Jay Shetty, Blake Griffin, Colin Kaepernick, and Jimmy Rollins. These are equity investors, not just brand ambassadors. Joel Embiid’s Embiid Ventures also participated in the funding round alongside institutional investors like Andreessen Horowitz.
Q2: What does Function Health include?
Function Health includes 100+ blood and urine tests covering heart health, hormones, metabolic markers, nutrients, organ function, and cancer screening biomarkers. Members receive AI-generated reports and clinician-reviewed insights after each draw. Optional add-ons include a full-body MRI for $499 and a Heart and Lungs CT scan for $349.
Q3: Is Function Health an American company?
Yes, Function Health is an American company based in Austin, Texas. It partners with Quest Diagnostics for lab processing at certified U.S. facilities. The company raised $351 million in total funding and reached a $2.5 billion valuation in November 2025. It operates fully within U.S. healthcare regulations.
Q4: How much does Function Health cost per year?
Function Health costs $499 per year for the standard membership, covering two rounds of comprehensive lab testing with 100+ biomarkers. Optional add-ons include a full-body MRI at $499 and a Heart and Lungs CT scan at $349. Some employers, insurers, and Equinox gym members may access discounted pricing.
