Level Zero Health

Level Zero Health

Wearable biosensor for continuous hormone monitoring

Overview

Level Zero Health develops a biosensor platform for remote, continuous hormone monitoring. Its core product is a minimally invasive arm patch that uses DNA-based biosensors and microneedles to measure hormones such as estrogen, progesterone, cortisol, and testosterone in interstitial fluid. The patch attaches to the skin, accesses interstitial fluid with microneedles, and converts hormone levels into electronic signals sent to a connected system for real-time tracking integrated into clinical workflows. The company differentiates itself with continuous, real-time data from a wearable platform focused on women's health, validated at 98% accuracy in simulated clinical ranges, and pursuing FDA and CE approvals to enable IVF, menopause management, and testosterone replacement therapy applications. Its goal is to move hormone tracking from infrequent tests to continuous data streams to support better clinical decisions, with plans to expand into consumer and pharmaceutical markets.

Significant Headcount Growth

About Level Zero Health

Simplify's Rating
Why Level Zero Health is rated
C
Rated C on Competitive Edge
Rated C on Growth Potential
Rated C on Differentiation

Industries

Data & Analytics

Biotechnology

Healthcare

Company Size

11-50

Company Stage

Seed

Total Funding

$6.9M

Headquarters

San Francisco, California

Founded

2023

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Simplify's Take

What believers are saying

  • Its website says clinical-grade hormone measurement without blood draws is now possible.
  • The company is accepting research and clinical partners for larger studies and trials.
  • IVF, menopause, and TRT create immediate B2B demand for faster, less-burdensome monitoring.

What critics are saying

  • The company still lacks FDA or CE clearance, blocking commercial sales through 2026.
  • It has no peer-reviewed published data, leaving accuracy claims vulnerable to clinical skepticism.
  • If clinical-grade correlation fails in IVF and TRT, the intermittent patch becomes a dead-end.

What makes Level Zero Health unique

  • Level Zero Health targets lab-free hormone measurement from interstitial fluid, not blood draws.
  • Its 2026 patch measures estradiol, progesterone, LH, cortisol, and testosterone in 10-15 minutes.
  • Redalpine, HAX, and Entrepreneur First back a 2023-founded team with device expertise.

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Funding

Total Funding

$6.9M

Above

Industry Average

Funded Over

1 Rounds

Seed funding is usually the first official round after pre-seed, when a startup has a prototype or concept. It’s typically used to develop the product, test the market, and start building the team. Investors here are often angel investors or early-stage venture capitalists.
Seed Funding Comparison
Above Average

Industry standards

$3.3M
$2M
Netflix
$2.3M
Instacart
$3M
Robinhood
$6.9M
Level Zero Health

Benefits

Company Equity

Growth & Insights and Company News

Headcount

6 month growth

17%

1 year growth

17%

2 year growth

42%
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BusinessLive
Feb 18th, 2025
Level Zero Health raises $6.9M pre-seed

UK-based healthtech start-up Level Zero Health has raised $6.9 million (£5.5 million) in pre-seed funding, marking the largest amount ever secured by female founders in Europe. Led by Redalpine, the investment will support the development of a pioneering remote hormone monitoring device. Founded by Ula Rustamova and Irene Jia, the company aims to revolutionize hormone tracking with a non-invasive wearable patch. The funding will advance R&D and expand the team, with plans to enter consumer health markets.

EU-Startups
Feb 18th, 2025
Level Zero Health lands €6.6 million for "world's first" continuous hormone monitoring device

London-based HealthTech startup Level Zero Health today announced a €6.6 million pre-Seed funding round to enable remote and continuous hormone monitoring, using unique DNA-based sensors.

TechCrunch
Feb 18th, 2025
Level Zero Health banks $6.9M to prove wearable medtech can take the strain out of hormone testing | TechCrunch

Level Zero Health, a female-founded medical device startup that's aiming to break new ground by developing a device for continuous hormone monitoring, has

Brown Brothers Media
Feb 18th, 2025
UK and US-based Level Zero Health raises €6.63M to develop the first remote hormone monitoring device

UK and us-based Level Zero Health raises €6.63M to develop the first remote hormone monitoring device.

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