Fibrinogen
CoagulationNormal range
200–400 mg/dL
SI: 2–4 g/L
Critical low: < 100 mg/dL
☎ When to call
< 100 in a bleeding or obstetric patient — call now; cryoprecipitate is the anticipated order.
What you do
- Falling fibrinogen + falling platelets + rising PT/PTT = DIC picture — assemble the trend for the provider
- Anticipate cryoprecipitate orders when < 100 with bleeding
Causes of HIGH fibrinogen
Causes of LOW fibrinogen
Source: Pagana, Mosby's Manual of Diagnostic and Laboratory Tests, 7th ed.Reference only — verify against your facility's policy.
