Used for the quantitative determination of prostacyclin (PGI) levels in biological samples such as plasma, serum, or cell culture supernatants. This assay is widely applied in cardiovascular research to assess endothelial function and monitor conditions involving platelet aggregation and vascular inflammation. It is particularly useful in studies related to thrombosis, atherosclerosis, and pulmonary hypertension. The kit enables high sensitivity and specificity, allowing researchers to evaluate the role of prostacyclin in both normal physiology and disease states, as well as in the development and monitoring of related therapeutic interventions.