Where Biology
First Appears
Biology is often measured after dilution, degradation, and systemic clearance. KIFFIK enables direct access to Interstitial Fluid (ISF) — the molecular environment surrounding living cells where biology becomes visible earlier.
p-Tau217
IL-6
CTnT
CEA
MMP-9
ISF enables earlier biological visibility
Blood measures biology after systemic circulation. Interstitial Fluid (ISF) exists closer to where biological signaling begins.
Blood: What you currently measure
- Systemic downstream biology
- Intermittent molecular snapshots
- Diluted circulating signals
ISF: What you could measure
- Earlier biological signaling
- Dynamic molecular response
- Biomarkers that may be diluted, degraded, or difficult to observe in blood
Heikenfeld et al., Nature Biotechnology, 2019
KIFFIK expands biological visibility through ISF
The KIFFIK K-EXP™ platform enables controlled,
non-invasive access to Interstitial Fluid (ISF) for repeat biological measurement.
The platform is designed to support biomarker discovery, longitudinal monitoring, therapeutic response evaluation, PK/PD measurement, and dynamic physiology tracking.
Direct access to biology through ISF.
ISF Insights Across Every Stage
The K-EXP™ platform is designed to support biological measurement across discovery, clinical development, and real-world monitoring.
Early
Discovery
Earlier molecular visibility for biomarker research and biological mapping
Clinical
Development
Longitudinal PK/PD, therapeutic response, and dynamic physiology measurement
Real-World
Biology
Biological tracking across disease, recovery, performance, stress, and adaptation
Platform Applicability Across Biology
KIFFIK-derived ISF evaluations demonstrated reproducible biological measurement across disease biology, therapeutic response, stress physiology, recovery, inflammatory signaling, and performance monitoring.
25%+
Biomarkers observed in evaluated ISF datasets not detected in matched plasma
Elevated Stability
Observed in select evaluated ISF samples relative to plasma
Validated Across Biological Conditions
Platform evaluations span disease, recovery, stress, exercise, and therapeutic response
Biology is the Next Operating System
Artificial intelligence learned from the digital world: text, images, code, movement, and behavior. The next frontier is understanding the human operating system — biology itself.
KIFFIK enables longitudinal access to biology in ways historically difficult to achieve through conventional blood-based measurement alone.
ISF becomes the biological interface. KIFFIK becomes the platform enabling access.
Explore the future of biological access through Interstitial Fluid.