Function Health raised $298 million in a Series B led by Redpoint Ventures, valuing the lab-testing startup at roughly $2.5 billion. The company sells subscription-based access to over 160 lab tests and imaging, and the round follows surging investor interest in consumer-facing diagnostics and at‑home testing services. Function plans to use the capital to scale testing operations, broaden its service mix and accelerate growth amid rising demand for personalized health data and preventative care offerings.