Used to measure levels of Prostaglandin E1 in biological samples such as plasma, serum, or cell culture supernatants. Commonly applied in research settings to study inflammatory processes, vascular function, and immune responses. Helps assess the role of PGE1 in conditions like cardiovascular diseases, erectile dysfunction, and neonatal ductus arteriosus regulation. Widely used in preclinical studies and drug development to evaluate therapeutic effects involving prostaglandin pathways. Provides a sensitive and specific quantitative analysis, supporting reproducible results in experimental models.