Analysis of Serum Serotonin by High-Performance Liquid Chromatography-Tandem Mass Spectrometry Using Online Solid-Phase Extraction.

We propose a method for the quantitative determination of serotonin in blood serum using high-performance liquid chromatography with tandem mass spectrometry detection (HPLC-MS/MS) and online solid-phase extraction in a chromatographic system. This approach allows serotonin quantification in blood serum within a range of 0.5-2000 ng/ml, partially automates the sample preparation process, and minimizes the influence of matrix components.