Lynch, S P, Seth, R V, Main, J · Journal of the Royal Society of Medicine · 1992 · DOI
This study tested whether two blood tests (Monospot and VP1) could help identify ME/CFS by comparing 34 ME/CFS patients with 34 people who had depression. While some patients tested positive for VP1 virus markers, the tests could not reliably tell the two groups apart, and results were inconsistent when patients were retested six months later.
Understanding whether viral markers like VP1 distinguish ME/CFS from other conditions such as depression is crucial for developing diagnostic criteria and identifying disease mechanisms. This early study helps clarify why simple viral serology tests have not proven useful for ME/CFS diagnosis, informing more targeted biomarker research strategies.
This study does not prove that viral infections play no role in ME/CFS; it only shows that Monospot and VP1 antigen tests are not reliable diagnostic tools. The findings do not establish whether VP1 presence represents active infection, past exposure, or a coincidental finding. Absence of test discrimination between groups does not exclude the possibility that viral factors contribute to disease pathogenesis in subsets of 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 →
The first block is for the primary paper and is the citation you should use in research work. The atlas-snapshot line only applies if you are specifically referring to this atlas’s reading of the paper on the date shown.
Primary citation
Lynch, S P, Seth, R V, & Main, J (1992). Monospot and VP1 tests in chronic fatigue syndrome and major depression.. Journal of the Royal Society of Medicine. https://doi.org/10.1177/014107689208500909
BibTeX
@article{mecfsatlas-lynch-1992-monospot-vp1,
author = {Lynch, S P and Seth, R V and Main, J},
title = {Monospot and VP1 tests in chronic fatigue syndrome and major depression.},
journal = {Journal of the Royal Society of Medicine},
year = {1992},
doi = {10.1177/014107689208500909},
note = {PubMed: 1433120},
url = {https://www.mecfsatlas.com/evidence/lynch-1992-monospot-vp1},
}Atlas snapshot reference
ME/CFS Atlas. Generator v1 / Scanner v1.4 / policy v0.1. Accessed 2026-05-29. https://www.mecfsatlas.com/evidence/lynch-1992-monospot-vp1
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