Function Health vs West Pharmaceutical Services
Side-by-side comparison of AI visibility scores, market position, and capabilities
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.
About
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.
West Pharmaceutical Services (WST) reported ~$3.0B revenue in FY2024. Designs packaging components and delivery systems for injectable drugs — critical for vaccine and biologic drug manufacturing. HQ: Exton, PA.
About
West Pharmaceutical Services, Inc. is the global leader in packaging components and delivery systems for injectable medications, designing and manufacturing the stoppers, closures, caps, and drug delivery systems that seal vials, syringes, and cartridges containing vaccines, biologics, and injectable drugs. Every major pharmaceutical company and biologic manufacturer relies on West's containment solutions — the small rubber stopper sealing an mRNA vaccine vial or insulin cartridge is almost certainly a West product.
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