We’ve all known someone whose life was altered by a diagnosis that came too late. We’ve felt that shock ourselves – that moment when you ask how something so serious could stay hidden for so long, despite good doctors, regular checkups, and doing everything “right.”
It stays with you.
And it’s what first drew us to Function: the belief that people shouldn’t be left guessing about their health until symptoms appear. The belief that the invisible should be visible. The belief that the future of healthcare should feel less like reacting to bad news, and more like understanding your body in real time.
From the beginning, Function was built with ferocious clarity: If we want people to live 100 healthy years, we need to give them access to all the data that matters – and the intelligence to understand it. Not someday. Now.
Today, we’re excited to share that a16z is investing in Function’s oversubscribed $298M Series B at a $2.5B valuation and that Function is launching a major milestone in their mission: the Medical Intelligence Lab.
Function started by redefining what routine health looks like. Its bi-annual, 100+ test lab panel gave hundreds of thousands of people a deeper, more comprehensive view of their biology than a traditional annual physical could offer. With the acquisition of Ezra, Function extended this visibility through accessible advanced MRI and CT imaging – making proactive scanning something everyone, not just the lucky few, could benefit from.
The launch of the Medical Intelligence Lab takes that vision further. Medical Intelligence unifies everything – labs, imaging, wearables, IoT signals, medical records, global research – into a continuously learning model designed to reveal early patterns, update insights as your body changes, and translate complexity into simple, meaningful action.
Finally, technology is achieving what we’ve always wanted healthcare to do: understand us deeply, anticipate issues early, and empower us to act.
At a16z, we look for companies building entirely new categories – not incrementally better tools. Function is building the intelligence layer for human health: the system we’ve long imagined but have never had. And in the process, it’s reshaping what proactive care can look like for billions of people.
To Jonathan and everyone at Function: congratulations on this milestone. The vision is bold, the execution relentless, and the mission – to help every person live 100 healthy years – could not be more important.
We’re honored to be building this new era of Medical Intelligence alongside you.
