Used in biomedical research to measure levels of catecholamines such as dopamine, epinephrine, and norepinephrine in biological samples like plasma, serum, or tissue extracts. Enables investigation of neuroendocrine activity, stress responses, and neurotransmitter metabolism. Commonly applied in studies related to neurological disorders, cardiovascular diseases, and psychiatric conditions. Supports quantitative analysis in cell culture supernatants and cerebrospinal fluid, aiding in both clinical research and drug development.