Fibrinogen

Alternative names:

factor I; hypofibrinogenemia test; plasma fibrinogen; serum fibrinogen

Normal values:

The normal range is 200 to 400 mg/dl.

Note: mg/dl = milligrams per deciliter

What abnormal results mean:

• lack of fibrinogen production (acquired or congenital)
• excessive fibrinogen utilization (as in disseminated intravascular coagulation)
• fibrinolysis (either primary or secondary)
• hemorrhage, with transfusion of blood products deficient in fibrinogen

Additional conditions under which the test may be performed:

• DIC (Disseminated intravascular coagulation)
• hemophilia A
• hemophilia B
• placenta abruptio