Used in research settings to quantify levels of plasmin-anti-plasmin complexes in biological samples, primarily to assess fibrinolytic system activity. Helps in studying conditions related to abnormal blood clot breakdown, such as thrombosis, cardiovascular diseases, and liver disorders. The kit enables detection of early fibrinolytic changes, supporting investigations into clotting disorders and therapeutic efficacy of fibrinolytic drugs. Commonly applied in preclinical studies and biomarker validation using plasma or serum samples from rat models.