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Understand Fibrinogen

Fibrinogen

Heart & circulation markers

What the test generally measures, and what to ask about it.

Longetic keeps every lab and record you’ve had organized and easy to find, so your own Fibrinogen values sit together on one chart and you walk into your next appointment prepared.

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Updated Jul 13, 2026

What is Fibrinogen?

A protein made by the liver that helps your blood form clots and also rises with inflammation.

Fibrinogen is a clotting protein produced by the liver, and it is essential for stopping bleeding by helping blood clots take shape. Levels can go up with inflammation, infection, or pregnancy, and higher long-term levels have been associated in research with a greater tendency toward clotting and cardiovascular risk, while very low levels can be associated with bleeding problems. It is measured mainly when evaluating clotting or bleeding rather than as a routine cardiovascular screen.

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References

Clinical "Fibrinogen blood test" MedlinePlus (NIH/NLM). medlineplus.gov/ency/article/003650.htm.

About our sources

Clinical / professional

Medical societies, specialty colleges, and professional associations whose consensus statements reflect clinical practice standards.

Peer-reviewed research

Original research articles and systematic reviews published in indexed journals and verified through PubMed or DOI.

History of updates

Published · Jul 13, 2026
First published, written and independently fact-checked against the cited sources.

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