Where Complement cascade proteins is reported
Also listed as: C3, C4, factor B
| Condition | Direction | Compared against | Associated symptoms | Source |
|---|---|---|---|---|
| Long COVID | ↑ elevated | healthy controls | Complement-mediated inflammation | Baalbaki et al. 2025 |
Frequently asked questions
In which conditions is Complement cascade proteins altered?
In the OSMF atlas Complement cascade proteins is reported in Long COVID. It is elevated in 1 across 1 entries.
Is there a standard clinical test for Complement cascade proteins?
The atlas entries for Complement cascade proteins 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 Complement cascade proteins 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.
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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.