Used in biomedical research to quantify phospholipid transfer protein (PLTP) levels in human biological samples such as plasma or serum. This assay helps investigate the role of PLTP in lipid metabolism, particularly in high-density lipoprotein (HDL) remodeling and reverse cholesterol transport. Widely applied in studies related to cardiovascular diseases, metabolic syndrome, and diabetes, the kit enables researchers to assess PLTP activity and concentration under various physiological and pathological conditions. It is also used in clinical laboratories and pharmaceutical research to evaluate the impact of therapeutic interventions on lipid regulatory proteins.