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SARS-CoV-2 spike protein: biomarker evidence

SARS-CoV-2 spike protein appears in 1 entry of the OSMF biomarker atlas, covering Long COVID. Across those entries it is mixed 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.

Long COVID

Where SARS-CoV-2 spike protein is reported

Also listed as: Circulating spike antigen

ConditionDirectionCompared againstAssociated symptomsSource
Long COVID↕ inconsistenthealthy controlsAntigen persistence hypothesisThomas et al. 2024

Frequently asked questions

In which conditions is SARS-CoV-2 spike protein altered?

In the OSMF atlas SARS-CoV-2 spike protein is reported in Long COVID. It is mixed in 1 across 1 entries.

Is there a standard clinical test for SARS-CoV-2 spike protein?

The atlas entries for SARS-CoV-2 spike protein 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 SARS-CoV-2 spike protein 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). SARS-CoV-2 spike protein across conditions: biomarker evidence. OSMF Research Tracker. Retrieved October 7, 2026, from https://research.opensourcemed.info/biomarkers/markers/sars-cov-2-spike-protein.html
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Last reviewed: 2026-06-29 · 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.