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Fibrinogen across conditions

Fibrinogen appears in 2 entries of the OSMF biomarker atlas, covering COPD, Long COVID. Across those entries it is elevated in 2. Because the same marker shifts in several unrelated conditions, it is best understood as a signal of shared biology such as inflammation, vascular or metabolic stress rather than as a condition-specific test. Each row below links to a page with the comparison group, associated symptoms, test details and primary citation.

COPDLong COVID

Where Fibrinogen is reported

Also listed as: Clotting factor

ConditionDirectionCompared againstAssociated symptomsSource
COPD↑ elevatedsmokers/COPD vs non-smokers—Yanbaeva et al. 2007
Long COVID↑ elevatedhealthy controlsCoagulation activationThomas et al. 2024

Frequently asked questions

In which conditions is Fibrinogen altered?

In the OSMF atlas Fibrinogen is reported in COPD, Long COVID. It is elevated in 2 across 2 entries.

Does Fibrinogen point to one specific diagnosis?

No. Because Fibrinogen changes in several conditions (COPD, Long COVID), an abnormal result cannot identify which condition, if any, is present. It must be interpreted with symptoms, history and other tests.

What is the LOINC code for Fibrinogen?

Entries in this atlas use LOINC 3255-7. LOINC codes identify the laboratory observation so results can be compared across systems.

Is one abnormal Fibrinogen 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). Fibrinogen across conditions: biomarker evidence. OSMF Research Tracker. Retrieved October 7, 2026, from https://research.opensourcemed.info/biomarkers/markers/fibrinogen.html
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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.