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Researchers at Ilam University in Iran have developed a novel electrochemical sensor for the selective determination of methylergonovine maleate (MM). The sensor, based on a molecularly imprinted polymer (MIP) created through electropolymerization of dopamine monomer, demonstrated a limit of detection (LOD) of 0.016 nM and a linear range from 0.05 to 300 nM. The sensor showed good repeatability, stability, and selectivity, and was successfully used to detect MM in Methergin tablets and blood serum samples. The research also utilized high-performance liquid chromatography (HPLC) as a standard and reference method. [Extracted from the article]