A nanoelectronics-blood-based diagnostic biomarker for myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS)
Rahim Esfandyarpour, Aref Kashi, Maya Nemat-Gorgani et al. · Proceedings of the National Academy of Sciences (PNAS) · 2019 · DOI
Quick Summary
Stanford researchers developed a nanoelectronics device that detects immune cell changes using a tiny electrical sensor. When salt stress was applied to blood samples, ME/CFS patient samples showed a distinctly different electrical response compared to healthy controls. This 'nano-needle' assay could potentially serve as an objective diagnostic test.
Why It Matters
This study represents progress toward an objective biological test for ME/CFS. The dramatic difference in immune cell response to stress challenge distinguishes ME/CFS samples from healthy controls with high accuracy in this initial study.
What This Study Does Not Prove
This is a small proof-of-concept study. The assay needs validation in larger independent cohorts and comparison with other fatiguing conditions before clinical use. The mechanism behind the altered electrical signal is not fully understood.
Topics
Tags
Metadata
- DOI
- 10.1073/pnas.1901274116
- Sample size
- 40 patients
- Control group
- Yes
- Review status
- Editor reviewed
- Evidence level
- Single-study or moderate support from human research
- Last updated
- 7 April 2026