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Coagulation Studies
Normal range 200-400 mg/dL (2-4 g/L SI). Specimen: Plasma (sodium citrate).
Also known as: factor I.
Combined adult band. LabVals does not publish separate men's, women's, or pediatric ranges for Fibrinogen; those can be narrower than the band shown.
| Specimen | Plasma (sodium citrate) |
|---|---|
| Conventional range | 200-400 mg/dL |
| SI range | 2-4 g/L |
| Conversion factor | ×0.01 (conventional → SI) |
| Critical value | < 100 mg/dL (bleeding risk) |
| Panel | Coagulation Studies |
Convert any Fibrinogen result between units on the unit converter.
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).
For Fibrinogen, the commonly taught critical (panic) value is: < 100 mg/dL (bleeding risk). Critical results are reported to the provider immediately under your facility's policy.
Source: Adult reference values compiled from Pagana & Pagana, Mosby's Diagnostic and Laboratory Test Reference, and Fischbach & Dunning, A Manual of Laboratory and Diagnostic Tests. Reference ranges vary by laboratory, method, age, sex, and population - always use the range printed on the actual result.
Above the range
Below the range
At the bedside
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