Gan, Elizabeth, Stoker, Megan, Guo, Edie et al. · Methods in molecular biology (Clifton, N.J.) · 2025 · DOI
This study describes a new laboratory technique called Raman microspectroscopy that can examine individual immune cells from blood samples in detail. The technique uses light and computer analysis to identify chemical differences inside cells that might help doctors distinguish between people with chronic illnesses and healthy people, potentially leading to better diagnosis and treatment.
For ME/CFS patients, developing a reliable biological test could enable earlier diagnosis, improve access to clinical care and research opportunities, and help reduce the diagnostic delays and stigma that currently plague the disease. This technique offers a potential path to identify objective immune cell abnormalities that could support disease characterization and stratify patient subgroups for targeted research and treatment approaches.
This methods paper does not present disease-specific findings from ME/CFS patients, nor does it establish that Raman microspectroscopy can definitively diagnose ME/CFS. The study describes the technical approach rather than proving its clinical utility, and any observed differences between groups would require validation in independent cohorts before clinical application.
About the PEM badge: “PEM required” means post-exertional malaise was an explicit required diagnostic criterion for participant inclusion in this study — not that PEM was studied, observed, or discussed. Studies using criteria that do not require PEM (e.g. Fukuda, Oxford) are tagged “PEM not required”. How the atlas works →
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