Used in biomedical research to measure catecholamine levels such as dopamine, norepinephrine, and epinephrine in rat samples. Helps in studying stress responses, neurological disorders, and endocrine system function. Commonly applied in preclinical studies to evaluate neurotransmitter changes due to drugs, toxins, or disease conditions. Provides a sensitive and specific method for quantifying low concentrations of catecholamines in serum, plasma, or tissue homogenates. Supports research in pharmacology, neuroscience, and physiology.