Above the range
Common causes of a high Fibrinogen
- Acute inflammation (acute-phase reactant)
- Pregnancy
- Infection
Looking for the other direction? See what causes a low Fibrinogen.
All tests · Coagulation Studies · Fibrinogen
Above the range
What causes a high Fibrinogen?
Normal range 200-400 mg/dL (2-4 g/L SI). Specimen: Plasma (sodium citrate). See the full Fibrinogen reference page for critical values and nursing considerations.
What is the normal range for Fibrinogen?
The standard teaching reference range for Fibrinogen is 200-400 mg/dL in conventional units, or 2-4 g/L in SI units. This value is measured in plasma (sodium citrate).
| Specimen | Plasma (sodium citrate) |
|---|---|
| Conventional range | 200-400 mg/dL |
| SI range | 2-4 g/L |
| Critical value | < 100 mg/dL (bleeding risk) |
| Panel | Coagulation Studies |
Full details, including nursing considerations, on the Fibrinogen normal range page. Reference ranges vary by laboratory, method, age, sex, and population - always use the range printed on the actual result.
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