Used in biomedical research to quantitatively measure levels of human apolipoprotein J (also known as clusterin) in biological samples such as serum, plasma, cerebrospinal fluid, and cell culture supernatants. The kit is commonly applied in studies related to neurodegenerative diseases like Alzheimer's, where apo-J plays a role in amyloid-beta clearance and neuronal protection. It is also used in cancer research, as apo-J expression is altered in various tumors and may influence apoptosis and treatment resistance. Additionally, the kit supports research in cardiovascular diseases, kidney disorders, and inflammatory conditions due to apo-J’s involvement in lipid metabolism, tissue remodeling, and complement regulation. The ELISA format allows for high sensitivity and specificity, making it suitable for both clinical and experimental settings.