# Function Health **Source:** https://geo.sig.ai/brands/function-health **Vertical:** Digital Health **Subcategory:** Longevity & Preventive Health **Tier:** Challenger **Website:** functionhealth.com **Last Updated:** 2026-04-14 ## Summary Raised $298M Series B (Nov 2025) at $2.5B valuation. Largest-ever longevity raise. 160+ lab tests + full-body MRI. Medical Intelligence AI model launched. ## Company Overview Function Health is a consumer preventive diagnostics company offering 160+ laboratory tests plus a $499 full-body MRI scan, all direct-to-consumer with AI-powered health intelligence layered on top. The company raised $298 million in Series B financing in November 2025 at a $2.5 billion valuation — the largest private fundraise in the longevity and preventive health space in history. The Medical Intelligence generative AI model, launched alongside the round, personalizes health guidance based on longitudinal biomarker data accumulated across repeat testing cycles. Function Health acquired Ezra to integrate full-body MRI into its core offering, combining functional blood biomarkers (organ health, hormones, metabolic markers, cancer screening panels) with anatomical imaging into a comprehensive diagnostic picture unavailable from any single provider. The combined offering positions Function as the consumer-facing layer of the "longevity movement" — people who want data-driven visibility into their health trajectory before disease manifests. The preventive diagnostics market is large and growing rapidly, driven by a generational shift toward proactive rather than reactive healthcare. Function Health's subscription model creates recurring revenue from an affluent, health-engaged demographic willing to pay out of pocket for comprehensive monitoring. As longevity medicine moves from boutique clinics to mass-market consumer products, Function Health is positioned as the data infrastructure layer of that transition. ## Frequently Asked Questions ### What does Function Health offer? 160+ laboratory tests plus a $499 full-body MRI, direct-to-consumer, with a Medical Intelligence AI model that personalizes health guidance based on longitudinal biomarker data. ### How much has Function Health raised? $298M Series B at $2.5B valuation (November 2025) — the largest-ever private raise in the longevity and preventive health category. ### What did Function Health acquire? Ezra, a full-body MRI company, integrating anatomical imaging alongside functional blood biomarker testing into a single comprehensive diagnostic offering. ### What is the Medical Intelligence model? Function Health's generative AI that personalizes health guidance and flags anomalies based on longitudinal biomarker trends — increasingly accurate as testing is repeated over time. ### What is Function Health and what does its membership include? Function Health is a longevity and preventive health company offering comprehensive annual lab testing (100+ biomarkers) combined with physician interpretation and health tracking to give members a complete picture of their health before problems emerge. ### What biomarkers does Function Health test? Function Health tests over 100 biomarkers including standard metabolic panels, hormones, thyroid, cardiovascular risk markers (ApoB, Lp(a)), immune function, nutrient levels, heavy metals, and cancer markers—far broader than typical annual physicals. ### How does Function Health differ from a standard doctor visit? Function Health provides comprehensive baseline lab data that most physicians don't order at standard visits, enabling members to identify hidden risk factors and optimize health proactively rather than reactively once symptoms appear. ### Is Function Health covered by insurance? Function Health operates on a direct membership model and is not covered by traditional insurance. Some costs may be reimbursable through HSA/FSA accounts. The membership fee covers the testing and physician interpretation. ## Tags b2c, healthtech, mobile-first --- *Data from geo.sig.ai Brand Intelligence Database. Updated 2026-04-14.*