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Function Health
American health technology company
Function Health
Function Health, often stylized as simply Function, is an American company and platform headquartered in Austin, Texas. The venture capital-backed company offers blood testing services. The company was co-founded by Mark Hyman, Pranitha Patil, Mike Nemke, Seth Weisfeld, Jonathan Swerdlin and Daniel Swerdlin. The company offers a membership-based health platform with direct-to-consumer blood testing, urine testing (21 tests), for a total of 160 tests, along with AI-generated reports and cross-promotion of supplements, with an option of adding full-body MRI and CT scans. The company was valued at $2.5 billion in its last financing round in November 2025.
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