Used in biomedical research to quantify apolipoprotein D levels in biological samples such as serum, plasma, cerebrospinal fluid, and tissue homogenates. Enables studies on Apo-D's role in lipid metabolism, neurodegenerative diseases like Alzheimer's and Parkinson's, and its potential as a biomarker for oxidative stress and aging. Widely applied in neuroscience, clinical diagnostics research, and drug development to monitor disease progression and evaluate therapeutic efficacy. The kit provides a sensitive and specific method for detecting low concentrations of Apo-D, supporting high-throughput analysis in microplate format.