The Thrombosis Assay Kit is an in vitro diagnostic product intended for the quantitative determination of five thrombosis‑related molecular markers in human plasma or whole blood. By simultaneously monitoring three key pathophysiological systems—coagulation activation, fibrinolysis activation, and vascular endothelial injury—the kit provides a comprehensive assessment of the pre‑thrombotic state, enabling early risk evaluation, early diagnosis, and therapeutic monitoring in high‑risk populations.