Fibrinogen — Clotting Protein
Fibrinogen is a protein made in the liver that helps blood clot. How to read your fibrinogen result against the lab's range.
Fibrinogen is a protein made in the liver that helps blood clot, and the fibrinogen blood test measures how much of it is in your blood against the lab's range. Per Cleveland Clinic, too much fibrinogen increases the risk of a heart attack and may point to a clotting disorder.
The biomarker
- Name: Fibrinogen
- Units: mg/dL
- Standard reference range: 200–400 mg/dL (ranges vary by lab)
How to read your result
| Value | Interpretation |
|---|---|
| < 200 | Below the lab's range — review with a clinician. |
| 200–400 | Within the typical range. |
| > 400 | Above the range — per Cleveland Clinic, too much fibrinogen increases heart-attack risk and may point to a clotting disorder. Review with a clinician. |
What moves the needle
- Clinician. Discuss a result outside the lab's range with a clinician.
- Context. The test is often ordered when there are problems with blood clotting, such as excessive bleeding.
Why this test is worth asking for
- Fibrinogen is a protein made in the liver that helps blood clot; the test measures how much of it is in your blood.
- Per Cleveland Clinic, higher-than-normal fibrinogen increases the risk of a heart attack and may point to a clotting disorder.
Related protocols
- hs-CRP — Systemic Inflammation
- Omega-3 Index — EPA + DHA Blood Test
- 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.
