Research Tracker›Biomarker Atlas›Marker Pages›CSF IgG Index

CSF IgG Index: biomarker evidence

CSF IgG Index appears in 1 entry of the OSMF biomarker atlas, covering Multiple Sclerosis. Across those entries it is elevated in 1. It is currently reported in a single condition in this atlas; cross-condition comparison will be added as the dataset grows. Each row below links to a page with the comparison group, associated symptoms, test details and primary citation.

Multiple Sclerosis

Where CSF IgG Index is reported

ConditionDirectionCompared againstAssociated symptomsSource
Multiple Sclerosis↑ elevatedMS vs healthy (diagnostic marker)—Saadeh et al. 2022

Frequently asked questions

In which conditions is CSF IgG Index altered?

In the OSMF atlas CSF IgG Index is reported in Multiple Sclerosis. It is elevated in 1 across 1 entries.

Is there a standard clinical test for CSF IgG Index?

The atlas entries for CSF IgG Index do not carry a LOINC code, which usually means the marker was measured with research assays or study-specific methods rather than a routine clinical panel.

Is one abnormal CSF IgG Index result diagnostic?

No single biomarker result is diagnostic of any of these conditions. Findings reflect group averages from published cohorts with substantial overlap between patients and controls.

Cite this page

Open Source Medicine Foundation. (2026). CSF IgG Index across conditions: biomarker evidence. OSMF Research Tracker. Retrieved October 7, 2026, from https://research.opensourcemed.info/biomarkers/markers/csf-igg-index.html
Get OSMF research updates. New biomarker, trial and treatment evidence summaries by email.
Subscribe on Substack

Last reviewed: 2026-07-03 · Browse: Biomarker Index · All marker pages · Biomarker Atlas

Disclaimer: Educational synthesis of peer-reviewed research; not medical advice. Findings are group-level and vary with study design. Discuss any result with a qualified clinician.