Used in biomedical research to quantify 3-methoxynorepinephrine (NMN) levels in human biological samples such as plasma or urine. This ELISA kit enables the detection and measurement of NMN, a metabolite of norepinephrine, which is useful in studying catecholamine metabolism and sympathetic nervous system activity. It is commonly applied in clinical and research settings to investigate conditions related to stress, cardiovascular diseases, neurodegenerative disorders, and adrenal function. The assay provides a sensitive and specific method for high-throughput analysis, supporting both diagnostic research and pharmacological studies.