blood plasminogen activator inhibitor 1 level plasma plasminogen activator inhibitor 1 level 2021-04-12T17:32:02Z CMO:0003695 Measurement of the amount of plasminogen activator inhibitor 1 (PAI-1) in a specified sample of plasma, the fibrinogen-containing fluid portion of the blood in which the particulate components are suspended. PAI-1 is a serine protease inhibitor protein that functions as the principal inhibitor of tissue plasminogen activator (tPA) and urokinase (uPA), the activators of plasminogen and hence fibrinolysis (the physiological breakdown of blood clots). PMID:23799078 clinical_measurement_ontology plasma Serpine1 level plasma PAI1 level plasma serpin family E member 1 level slaulede