Function Health
Unicorn Β· $2.5BFounded 2022 Β· 38 known investors
Function Health provides routine whole-body lab testing, advanced imaging, and access to top doctors to help individuals achieve preventive health awareness and disease avoidance. The company combines medical diagnostics with technology to give patients comprehensive health insights.
Also known as Function
Founders & leadership
Function Health was founded in 2022 by Mark Hyman, M.D., Mark Hyman, Jonathan Swerdlin, and Pranitha Patil.
Investors Β· 38
Also in the syndicate Β· 7
Funding
SEC filings, press & company announcements- Undisclosed amountSeries BNov 2025Source β
Source: company announcements and press reports β follow each round's link for the claim.
Valuation Β· disclosed
Disclosed eventsSource: SEC prospectus filings, and round valuations the company or its investors disclosed β follow each entry's link for the claim.
Company profile
researched Aug 2026Function Health operates a subscription health platform that gives consumers access to comprehensive laboratory testing without a physician referral. A membership costs $365 per year and includes 160+ lab tests annually β roughly 100+ biomarkers at an annual visit and 60+ at a mid-year retest 3β6 months later β spanning heart and metabolic markers, hormones and thyroid, liver and kidney function, nutrients, inflammation, autoimmunity, heavy metals and potential cancer signals. Results are reviewed by clinicians, presented with personalized food and supplement guidance, and tracked over time so members can monitor trends and early indicators. Members can purchase add-on panels (extended heart, hormone, thyroid, immune and nutrient panels; ApoE for Alzheimer's risk; allergy and sexual health tests; the Galleri multi-cancer test) and add MRI and CT imaging.
The company states it is not itself a laboratory or medical provider: blood draws and analysis are performed by Quest Diagnostics at 2,000+ locations across 48 states (excluding Rhode Island, Hawaii and Puerto Rico), and laboratory and medical services are supplied by independent third parties. Function coordinates test ordering and presents results, positioning itself as an intermediary layer between consumers and existing lab infrastructure. Concierge at-home blood draws are available in select areas, and the company's Function Scans MRI service β built on the acquired Ezra business β was available at 130 sites as of November 2025 with plans for 200 by year-end. Data handling is described as SOC 2 Type II and HIPAA-aligned with encryption and no sale of personal information.
In November 2025 Function announced Medical Intelligence Lab, an effort to build a doctor-trained generative AI model, along with a member-facing chatbot that answers questions using a user's lab results, clinician notes and scans. The company has subsequently connected its data to third-party AI assistants including ChatGPT Health, Claude, Perplexity and Microsoft Copilot.
Founding story
The company was founded around the stated mission of enabling people to live 100 healthy years, motivated by the founders' own experiences with health challenges and with gaps in the healthcare system. Its stated approach is to combine routine whole-body lab testing, advanced imaging and access to leading physicians to support disease avoidance rather than reactive care.
Business model
Direct-to-consumer subscription. Members pay an annual membership fee that bundles a fixed set of lab tests, clinician review and a tracking platform; additional biomarkers, extended panels, the Galleri multi-cancer test, concierge blood draws and MRI/CT scans are sold as paid add-ons. Testing and lab analysis are delivered through third-party providers such as Quest Diagnostics, with Function acting as the ordering and results-presentation layer.
Recurring annual membership fees of $365 per member, plus on-demand fees for add-on tests, retests and imaging. Memberships are HSA/FSA eligible and sold without insurance billing, using transparent consumer pricing.
Traction
The company reports over 75 million lab results delivered to members and testing availability at 2,000+ Quest locations. It completed more than three million lab tests in 2023, more than 50 million since 2023 as of November 2025, and more than 100 million over three years as of July 2026. As of 2024 it reported at least 100,000 members and a 200,000-person waitlist. Function Scans imaging was live at 130 locations in November 2025.
Latest developments
In July 2026 Function raised $450 million from General Catalyst's Customer Value Fund, eight months after its Series B, bringing total capital raised past $800 million; General Catalyst partner Pranav Singhvi framed the investment as a bet on Function redefining preventive healthcare at scale, and CEO Jonathan Swerdlin said proceeds would fund scaling. Earlier in 2026 the company acquired at-home diagnostics provider Getlabs (April) and supplement-rating platform SuppCo (May), and announced AI integrations with OpenAI's ChatGPT Health and Anthropic's Claude (January) and with Perplexity AI and Microsoft Copilot (March), plus a Sweetgreen menu collaboration.
βΈFull profile β market position, technology, go-to-market, geography, history, risks & controversies
Market position
A venture-backed leader among consumer preventive-testing platforms, valued at $2.5 billion in its November 2025 Series B and having raised more than $800 million in total by July 2026. It was named to Time's Most Influential Companies list in 2025. Management identifies Superpower, Neko Health and InsideTracker as competitors and argues that integrating lab testing, imaging and clinical insight β rather than acting as an AI coach or wellness app β is its differentiator. The company is part of a wider wave of consumer health startups raising large late-stage rounds.
Breadth and price of the bundled panel (160+ tests annually versus roughly 26 in a standard checkup, for $365 against a claimed $15,000 retail equivalent), no insurance or physician referral required, clinician review of every result, a high-profile medical and scientific advisory board, and an integrated stack that combines lab testing, advanced MRI/CT imaging and AI-generated personalized insight. The company also cites a device-agnostic architecture and portability of results to outside doctors and AI tools.
Technology
A consumer-facing platform that aggregates lab results, uploaded historical records, doctor's notes and scans into a longitudinal health record with clinician review and personalized protocols. In November 2025 the company launched Medical Intelligence Lab, a generative large-language-model effort led by chief medical scientist Daniel Sodickson and CMO Mark Hyman, that powers a HIPAA-standard chatbot delivering personalized insights from a member's own data. Function takes a device-agnostic approach and exposes member data to external AI assistants through connectors. Imaging capability (advanced MRI/CT for early cancer detection across 50+ cancer types) came via the Ezra acquisition; specimen collection and analysis are performed by Quest Diagnostics.
Go-to-market
Primarily direct-to-consumer online sign-up with an emphasis on physician credibility (a medical and scientific board including Mark Hyman, JoAnn Manson, Andrew Huberman, Toby Cosgrove, Daniel Sodickson, Azra Raza, Eddie Chang and Luis Diaz) and celebrity/creator endorsement. Distribution is extended through partnerships with fitness, employer-benefits, athlete and consumer brands, and through integrations with mainstream AI assistants. The company has also used consumer marketing vehicles such as an Academy Awards nominee gift bag placement and a Mother's Day brand campaign.
Adults aged 18 and over (excluding people who are currently pregnant) in the US who want preventive, comprehensive testing outside the insurance system. Management describes the customer base as defined by motivation rather than demographics, spanning people seeking a health baseline, those managing chronic conditions, and those seeking answers after fragmented care. The company also reaches consumers through employer and membership channels via partners such as Equinox, Thrive Global, Thatch and the NBPA.
Geography
United States only. Headquarters in Austin, Texas; the team is described as fully remote. Testing is available at 2,000+ Quest labs across 48 states, excluding Rhode Island, Hawaii and Puerto Rico, with concierge in-home draws in select areas and MRI/CT scan sites numbering 130 as of late 2025.
History
Wikipedia dates the founding to 2021 with co-founders Mark Hyman, Pranitha Patil, Mike Nemke, Seth Weisfeld, Jonathan Swerdlin and Daniel Swerdlin; MedCity News describes the company as having launched in 2023. A $3 million seed round came in March 2022, followed by unreported seed rounds in December 2023 and April 2024 and a $53 million Series A in June 2024 at a $191 million valuation. Partnerships with Equinox (2024), Thrive Global (2024), Grail (2024), the NBPA (2025) and Thatch (2025) broadened distribution. Function acquired Ezra in May 2025 to add MRI scanning, raised a $298 million Series B at a $2.5 billion valuation in November 2025 alongside the Medical Intelligence Lab launch, acquired Getlabs in April 2026 and SuppCo in May 2026, and secured $450 million from General Catalyst's Customer Value Fund in July 2026.
Risks & controversies
Function is not a laboratory or medical provider and does not offer medical advice, diagnosis or treatment; all specimen collection, analysis and clinical interpretation are performed by third parties, leaving the company dependent on partners such as Quest Diagnostics. Wikipedia characterizes the model as a middleman layer over existing lab services and notes cross-promotion of supplements alongside AI-generated reports, a dynamic accentuated by the 2026 acquisition of supplement-rating platform SuppCo. The service handles sensitive personal health data and is exposed to third-party AI assistants, making privacy and security controls material; the company states data is encrypted, HIPAA-standard and never sold. Sources also conflict on the founding year (2021 per Wikipedia, launch in 2023 per MedCity News).
Compiled by commissioned research from 8 cited public sources β announcements, filings, and press listed under research sources below.
Key figures
latest reportedCompany-reported or press-reported figures, each dated to when it was claimed β not independently audited.
Competitors Β· 3
by search overlap
Companies competing with Function Health for the same Google search keywords, organic and paid, via search-intersection analysis.
Timeline Β· 18
launches, deals, and filings$450M source β
Acquired Getlabs, a mobile healthcare company providing at-home diagnostic testing.
Function Health included among health platforms connected to OpenAI's ChatGPT Health tab.
Built a connector allowing Claude to access members' health data and lab results through the Function Health app.
$298M source β
Unveiled an effort to build a doctor-trained generative 'medical intelligence' model, plus a consumer AI chatbot that answers questions using members' lab results, doctor's notes and scans; led by Dan Sodickson and Mark Hyman.
Acquired MRI screening company Ezra, founded by Emi Gal, to add full-body MRI scanning to the platform.
Partnered with employer health benefits platform Thatch to offer employees preventive diagnostic testing.
Provided NBPA members access to Function's lab testing panels.
Gave members access to Grail's Galleri blood-based multi-cancer early detection test screening for signals of 50+ cancers.
Offered an employee health coaching program with Arianna Huffington's Thrive Global.
$53M source β
Joint program combining Function lab testing with personalized nutrition, sleep and fitness coaching for Equinox members.
$3M source β
Dated company events from announcements, filings, and press; legal rows summarize public dockets and regulator releases.
In the news
Full-body scan startup Neko Health scores $700M to break into the U.S. marketfiercehealthcare.com Β· Jul 2026βΈResearch sources Β· 8
primary sources listed
- Function Healthfunctionhealth.com Β· web
8 public sources were cited for this profile; the first-party ones are listed here.
Frequently asked questions
- What does Function Health do?
- Austin-based membership platform offering 160+ direct-to-consumer lab tests a year, advanced imaging and AI-driven health insights.
- Who founded Function Health?
- Function Health was founded by Mark Hyman, M.D., Mark Hyman, Jonathan Swerdlin, Pranitha Patil in 2022.
- Who are Function Health's investors?
- Function Health's investors include 1843 Capital, Able Partners, Aglae Ventures, Andreessen Horowitz, Battery Ventures, Blue Ivy Ventures, BroadLight Capital, Cade Ventures and 23 more.