Germain, Arnaud, Ruppert, David, Levine, Susan M et al. · Metabolites · 2018 · DOI
Researchers studied blood samples from 32 women with ME/CFS and 19 healthy women to look for chemical differences. They found 14 metabolites (small molecules in the blood) that were different in ME/CFS patients, suggesting their bodies may have trouble managing oxidative stress—a chemical imbalance that could contribute to their symptoms. This discovery could eventually help doctors identify ME/CFS through a blood test.
ME/CFS lacks diagnostic biomarkers and disease-modifying treatments, leaving patients without objective confirmation of illness. This work provides preliminary biochemical evidence linking redox dysfunction to ME/CFS pathophysiology and identifies potential blood-based diagnostic markers. Validating these findings could advance diagnostic accuracy and open therapeutic targets for redox modulation.
This study does not prove that redox imbalance causes ME/CFS symptoms or that correcting it will improve symptoms—only that the imbalance exists alongside the disease. The small sample size and lack of longitudinal follow-up mean the candidate biomarkers have not yet been validated in independent populations. The female-only cohort means findings may not apply equally to male ME/CFS patients.
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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Primary citation
Germain, Arnaud, Ruppert, David, Levine, Susan M, & Hanson, Maureen R (2018). Prospective Biomarkers from Plasma Metabolomics of Myalgic Encephalomyelitis/Chronic Fatigue Syndrome Implicate Redox Imbalance in Disease Symptomatology.. Metabolites. https://doi.org/10.3390/metabo8040090
BibTeX
@article{mecfsatlas-germain-2018-prospective-biomarkers,
author = {Germain, Arnaud and Ruppert, David and Levine, Susan M and Hanson, Maureen R},
title = {Prospective Biomarkers from Plasma Metabolomics of Myalgic Encephalomyelitis/Chronic Fatigue Syndrome Implicate Redox Imbalance in Disease Symptomatology.},
journal = {Metabolites},
year = {2018},
doi = {10.3390/metabo8040090},
note = {PubMed: 30563204},
url = {https://www.mecfsatlas.com/evidence/germain-2018-prospective-biomarkers},
}Atlas snapshot reference
ME/CFS Atlas. Generator v1 / Scanner v1.4 / policy v0.1. Accessed 2026-05-28. https://www.mecfsatlas.com/evidence/germain-2018-prospective-biomarkers
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