What is the primary function of fibrinogen?

What is the primary function of fibrinogen?

• A. Hemostasis
• B. Antibody production
• C. Phagocytosis
• D. Complement fixation

Answer: (A)

Fibrinogen’s main job is to support hemostasis by forming a fibrin clot. In the coagulation cascade, thrombin converts soluble fibrinogen into insoluble fibrin strands that weave through the platelet plug to create a stable mesh, sealing injured vessels and stopping bleeding. That stabilization is the essence of its function. It’s not involved in antibody production (that’s done by B cells), phagocytosis (carried out by macrophages and neutrophils), or complement fixation (part of the complement system). While fibrinogen can rise during inflammation as an acute-phase reactant, its primary role is clot formation.

Fibrinogen’s main job is to support hemostasis by forming a fibrin clot. In the coagulation cascade, thrombin converts soluble fibrinogen into insoluble fibrin strands that weave through the platelet plug to create a stable mesh, sealing injured vessels and stopping bleeding. That stabilization is the essence of its function. It’s not involved in antibody production (that’s done by B cells), phagocytosis (carried out by macrophages and neutrophils), or complement fixation (part of the complement system). While fibrinogen can rise during inflammation as an acute-phase reactant, its primary role is clot formation.