Used in biomedical research to measure levels of coagulation factor Ⅻ in rat plasma or serum samples. Helps investigate the role of factor Ⅻ in blood clotting pathways, thrombosis, and inflammatory responses. Commonly applied in studies related to hemostasis, cardiovascular diseases, and anticoagulant drug development. Provides a reliable, sensitive, and specific method for quantifying factor Ⅻ concentration, enabling researchers to assess changes under experimental conditions or disease states.