Function Health

Function Health is a health membership company based in Austin, Texas, focused on proactive health monitoring. The company aims to help individuals live healthier lives by offering a subscription model that provides access to extensive lab testing and personalized health insights. Members receive 160+ lab tests annually, with testing scheduled twice a year, and results are reviewed by clinicians to ensure clarity and actionable guidance. The membership is designed to be insurance-free, allowing members to track their health trends over time without relying on traditional healthcare models. Function Health emphasizes early detection and ongoing health management, providing personalized action plans based on test results. The service is available through over 2,000 Quest Diagnostics locations across 48 states, making it accessible for many individuals seeking a comprehensive view of their health.

Consumer lab-testing membership with a 'medical intelligence' AI model. $100M+ ARR in under two years (Bessemer); $2.5B valuation (Series B, late 2025); $450M growth financing from General Catalyst (Jul 2026). Extra.