Used in biomedical research to measure endorphin levels in mouse tissue or serum samples. Helps study pain response, stress, and emotional behavior in preclinical models. Commonly applied in neuroscience, pharmacology, and behavioral studies to evaluate how drugs or experimental conditions affect the endogenous opioid system. Provides quantitative data with high sensitivity and specificity, enabling accurate assessment of endorphin fluctuations in various physiological and pathological states.