Used in biomedical research to quantitatively measure anti-factor Xa (AT-Xa) activity in human plasma samples. This ELISA kit is particularly applied in studies related to anticoagulant therapy, such as monitoring heparin or low-molecular-weight heparin (LMWH) efficacy. It helps researchers assess drug pharmacokinetics, evaluate thrombosis risk, and investigate coagulation disorders. Commonly used in clinical laboratories and pharmaceutical development for evaluating anticoagulant response and optimizing dosing regimens.