Level Zero Health, a UK- and US-based medtech startup, has secured $6.9 million in pre-seed funding to develop a wearable device for continuous hormone monitoring.
The round was led by Redalpine, with participation from HAX (SOSV), Entrepreneur First (EF), and industry experts.
Revolutionizing Hormone Testing with Wearable Tech
Currently, hormone testing requires invasive blood draws at medical facilities. Level Zero Health is working on a non-invasive, wearable device that measures progesterone, estrogen, and testosterone from interstitial fluid—the fluid surrounding body cells.
The company aims to create a new product category, similar to how continuous glucose monitors (CGMs) transformed diabetes care.
CEO Ula Rustamova explained:
“CGMs built a multi-billion dollar market from scratch. We believe continuous hormone monitoring will do the same, unlocking new insights into fertility, testosterone therapy, and hormone-related conditions.”
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Two-Stage Product Development Strategy
Since launching in 2023, Level Zero Health has been working on two product tracks:
- Single-use hormone patch (launching in 2026) – Designed for intermittent hormone testing, targeting fertility treatments (IVF) and testosterone therapy (TRT).
- Continuous hormone monitor (targeted for 2028) – A wearable patch that tracks hormone fluctuations in real-time, providing continuous, actionable data.
The first-generation device is currently undergoing clinical trials to demonstrate 90%+ accuracy compared to traditional blood testing. The company is pursuing FDA and CE approvals to launch in both U.S. and European healthcare markets.
A New Era of Personalized Health Tracking
Level Zero Health envisions its technology enabling precision hormone treatments, improving:
- Fertility and IVF success rates
- Testosterone replacement therapy (TRT) management
- Personalized dosing for hormone-based contraception
Philip Kneis, investor at Redalpine, emphasized the potential:
“Continuous hormone tracking is a breakthrough in diagnostics. Level Zero Health’s biosensor technology is paving the way for a new era of personalized health management.”
With its pre-seed funding secured, Level Zero Health is set to validate its wearable technology and bring continuous hormone monitoring closer to reality.
