Fibrinogen
Disclaimer: Information on this page is for educational purposes. Consult a physician to interpret your test results. Lissa Health helps track biomarker trends but does not replace medical advice.
What This Test Measures
Fibrinogen is the fibrin clot precursor and an acute phase reactant.
Low fibrinogen occurs in DIC and liver failure; high levels are a CVD risk marker.
Normal Ranges
| Group | Reference Range |
|---|---|
| Men | 200–400 mg/dL |
| Women | 200–400 mg/dL |
| Children | 160–400 mg/dL |
Reference ranges may vary by laboratory and assay method.
Causes of High Levels
- Inflammation
- Pregnancy
- Smoking
- Cardiovascular disease
Causes of Low Levels
- DIC
- Liver failure
- Congenital afibrinogenemia
Test Preparation
- Report anticoagulants and bleeding
Related Biomarkers
| Biomarker | Relationship |
|---|---|
| D-Dimer | Fibrin degradation |
| Prothrombin Time (PT) | Coagulation cascade |
| Platelets | Hemostasis |
FAQ
How often should I take this test?
In DIC — serial monitoring.
What should I do if my result is abnormal?
Low fibrinogen with bleeding — urgent transfusion evaluation.
Last updated: June 2026