Definition: A member of the serpin family of proteins that is found in plasma and urine. It is dependent on heparin and is able to inhibit activated PROTEIN C; THROMBIN; KALLIKREIN; and other SERINE ENDOPEPTIDASES.
Other names Plasminogen Activator Inhibitor 3; PAI-3; Type 3 Plasminogen Activator Inhibitor; Serpin A5; Protein C Inhibitor, Activated; Plasminogen Activator Inhibitor, Type 3; Activated Protein C Inhibitor