# Function Health

Startup profile on Capital Atlas: https://capitalatlas.ai/startups/function-health

- Industry: Healthcare
- Headquarters: Austin, US
- Website: www.functionhealth.com
- Total disclosed funding: $351M
- Latest round: Series B (Nov 19, 2025)
- Investors on record: 13

## About

Established in 2022 and based in Texas, US, Function Health, Inc. operates as a provider of lab testing service platforms for heart, hormones, and cancer. The company was co-founded by Mark Hyman, M.D., Pranitha Patil, Mike Nemke, and Jonathan Swerdlin. In November 2025, Function Health, Inc. raised USD 298 million in series B funding led by new investor Redpoint Ventures, with participation from other new investors Seedcamp and Battery Ventures. Returning investor Andreessen Horowitz and individual investors also participated in the round.

The company offers whole human body lab testing services. It provides tests for hormones, heart, thyroid, cancer, liver, fertility, toxins, female health, male health, and many more. A few of the tests include in the firm offerings are Lipoprotein (a), Apolipoprotein B (Apo B), LDL Particle Number, LDL Small, LDL Medium, Thyroid-Stimulating Hormone (TSH), Triiodothyronine (T3), Thyroxine (T4), Antinuclear Antibodies (ANA), Titer Antinuclear Antibodies (ANA) Screen, White Blood Cell (WBC) Count, Neutrophils (% and Absolute), Prostate Specific Antigen (PSA) %, and many others.

The company plans to use the November 2025 funding to develop its Medical Intelligence Lab, expand AI health features, and reduce annual membership costs.

## Funding rounds

- Series B, Nov 19, 2025, $298M — Battery Ventures, Redpoint Ventures, Andreessen Horowitz, Seedcamp
- Series A, Jun 25, 2024, $53M — Andreessen Horowitz, K5 Ventures, Draft Ventures, Wisdom VC, Fearless Ventures, Able Partners, G9 Ventures, Pari Passu Venture Partners, Cade Ventures Management, 53 Stations

## Investors

- Andreessen Horowitz (https://capitalatlas.ai/funds/andreessen-horowitz) — Series A, Series B
- K5 Ventures (https://capitalatlas.ai/funds/k5-ventures) — Series A
- Draft Ventures (https://capitalatlas.ai/funds/draft-ventures) — Series A
- Wisdom VC (https://capitalatlas.ai/funds/wisdom-vc) — Series A
- Fearless Ventures (https://capitalatlas.ai/funds/fearless-ventures) — Series A
- Able Partners (https://capitalatlas.ai/funds/able-partners) — Series A
- G9 Ventures (https://capitalatlas.ai/funds/g9-ventures) — Series A
- Pari Passu Venture Partners (https://capitalatlas.ai/funds/pari-passu-venture-partners) — Series A
- Cade Ventures Management (https://capitalatlas.ai/funds/cade-ventures-management) — Series A
- 53 Stations (https://capitalatlas.ai/funds/53-stations) — Series A
- Battery Ventures (https://capitalatlas.ai/funds/battery-ventures) — Series B
- Redpoint Ventures (https://capitalatlas.ai/funds/redpoint-ventures) — Series B
- Seedcamp (https://capitalatlas.ai/funds/seedcamp) — Series B