Used for quantifying monoamine oxidase (MAO) enzyme activity in human biological samples such as serum, plasma, or tissue homogenates. This ELISA kit enables researchers to assess MAO levels in studies related to neurological disorders including depression, Parkinson’s disease, and Alzheimer’s disease. It is also applied in drug development to evaluate the effects of MAO inhibitors and in clinical diagnostics to support the identification of metabolic or psychiatric conditions linked to abnormal MAO activity. The assay provides a sensitive and specific colorimetric measurement, suitable for high-throughput screening in research laboratories.