Used in research settings to quantify serotonin (5-HT) levels in biological samples such as serum, plasma, cerebrospinal fluid, and tissue homogenates. The kit enables detection of serotonin concentration through competitive enzyme-linked immunosorbent assay (ELISA), leveraging specific antibodies that bind to serotonin. Commonly applied in neuroscience, psychiatry, and pharmacology studies to investigate mood disorders, sleep regulation, appetite control, and neurochemical changes in response to drugs or disease states. Provides a reliable and sensitive method for monitoring serotonin dynamics in experimental models and clinical research. Not intended for diagnostic use.