Used for the quantitative measurement of PCSK9 protein levels in human serum, plasma, and other biological fluids. This ELISA kit is widely applied in cardiovascular research to assess the role of PCSK9 in lipid metabolism, particularly its influence on LDL cholesterol regulation. It supports studies related to atherosclerosis, hypercholesterolemia, and the development of PCSK9-targeted therapies. The kit enables high sensitivity and specificity detection, making it suitable for clinical research, drug development, and biomarker validation.