Function Health

Function Health is a health technology company that offers regular lab testing services and advanced imaging.

Latest funding

$298M Series B+ · November 19, 2025

Led by Redpoint Ventures · Source: fundraisingfox.com

Total raised: $351M across 2 sourced rounds

All 3 rounds ↓

Website: functionhealth.com.

X: @function · 23,855 followers.

LinkedIn: functionhealth.

Categories: Health and bio Developer tools and cloud.

Sectors: health-bio, ai.

Stage: Series B+.

Based in: Austin, United States.

Total raised: $351M in 2 sourced rounds.

Last round: Nov 19, 2025 · 358 days ago.

On Recent Funding since: Sep 28, 2026.

Signals

X account@function · created May 7, 2021 (5 years old) · 23,855 followers

Website registeredMar 2, 2011 (15 years old)

About Function Health

It provides customers with access to 160+ lab tests and imaging options like MRI and CT scans. Function Health makes money by charging customers an annual fee for its services.

TIMELINE · MONEY RAISED

Function Health | 1146 days from X account to first raise on record

@function·Raised $351M in 2 sourced rounds·1 signal before the first raise

Money raised, round by round (amounts linked to their source). Pins are dated signals; hover the icons for dates.

Funding rounds

November 19, 2025
Series B+ · $298M · $2.5B valuation
RRedpoint Ventures (lead), AAglaé Ventures, AAllen Crabbe, AAlumni Ventures, AAndreessen Horowitz, AAnthony Wood, BBattery Ventures, BBlake Griffin, MMenlo Ventures, NNFDG Ventures, TTaylor Griffin
Source: fundraisingfox.com
2025
SSeedcamp · batch
Source: seedcamp.com
June 26, 2024
Series A · $53M
AAndreessen Horowitz (lead), Aa16z Cultural Leadership Fund, BBlake Griffin, DDraft Ventures, GG9 Ventures, KK5, KKevin Hart, MMatt Damon, WWisdom.vc
Source: mobihealthnews.com
May 7, 2021
X account created
March 2, 2011
Website created

Founders and team

JS
Jonathan Swerdlin Co-founder and CEO

@swerdlin · source: functionhealth.com
DS
Dan Swerdlin Co-founder and general counsel

source: functionhealth.com
MH
Mark Hyman Co-founder and chief medical officer

@drmarkhyman · source: functionhealth.com
PP
Pranitha Patil Co-founder and chief business officer

@pranithapat · source: functionhealth.com
SW
Seth Weisfeld Co-founder and chief design officer

LinkedIn · source: functionhealth.com

Investors

Companies like Function Health

AAidoc$150M Series B+ · Apr 2026
RReyedar$3M Seed · Jul 2023
NNaveris$33.4M Series A · Sep 2022
PPostman$230M Series B+ · Aug 2021
PPortable Diagnostic Systems
BBiotwin

Other companies backed by Redpoint Ventures

SServal$150M Series B+ · Oct 2026
WWealthsimple$425M Series B+ · Oct 2026
HHex$100M Series B+ · Oct 2026
MModal$750M Series B+ · Oct 2026
SSonilo$11M Seed · Oct 2026
AArmadin$255M Series B+ · Oct 2026

Redpoint Ventures portfolio →

Sources and API

Every amount links to the page it came from. * Estimated from an accelerator's published standard deal, not a company-specific disclosure. How Recent Funding sources and verifies funding data. The same data as JSON: /api/v1/companies/function-health (get a free API key).