Fibrinogen — Clotting + Inflammation
Fibrinogen is a clotting factor and acute-phase reactant. Chronically elevated values track with cardiovascular and stroke risk. Use alongside hs-CRP.
Fibrinogen is a clotting factor and acute-phase reactant, doubling as both a measure of clotting capacity and a marker of inflammation. Chronically elevated values track with cardiovascular and stroke risk, so use it alongside hs-CRP for a fuller inflammation picture.
The biomarker
- Name: Fibrinogen
- Units: mg/dL
- Standard reference range: 200–400
- Optimal range: 200–350
How to read your result
| Value | Interpretation |
|---|---|
| < 200 | Low — investigate clotting disorders |
| 200–350 | Optimal |
| 350–400 | Borderline |
| ≥ 400 | Elevated — investigate inflammation, infection, or vascular risk |
What moves the needle
- Pair. hs-CRP, lipid panel, blood pressure.
- Clinician. Haematology referral if persistently high or very low.
- If elevated. Address inflammation root causes (sleep, diet, smoking).
Why this test is worth asking for
- Fibrinogen does double duty as a clotting factor and an acute-phase reactant, surfacing both clotting capacity and inflammation in one value.
- Chronically elevated levels track with cardiovascular and stroke risk, adding a dimension that a lipid panel alone does not capture.
- Paired with hs-CRP, it gives a fuller inflammation picture than either marker on its own.
Related protocols
- hs-CRP — Systemic Inflammation
- Omega-3 Index — EPA + DHA in Red Blood Cells
- Lp(a) — Genetic Cardiovascular Risk
Sources
AgeGen lab guides are educational only. We do not provide medical diagnosis, prescribe brands, or recommend specific doses. Talk to a licensed clinician before changing your supplement or medication routine.
