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Fibrinogen

Fibrinogen is the protein that forms fibrin when blood clots. It is also an acute-phase protein.

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Normal ranges

Adults: 2–4 g/L.

Units: g/L

Causes of deviations

Low levels:

Liver disease, inherited deficiency, massive blood loss.

High levels:

Inflammation, infection, pregnancy, estrogen use.

When to see a doctor

If the value is outside the range, discuss it with your doctor.

Related biomarkers

Panels

Coagulation panel

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This information is for educational purposes and does not replace medical advice.

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