Used in biomedical research to measure levels of fatty acid binding protein 4 (FABP4) in biological samples such as serum, plasma, and cell culture supernatants. It is widely applied in studies related to metabolic disorders including obesity, type 2 diabetes, and insulin resistance, where FABP4 plays a role in lipid metabolism and inflammation. The kit enables researchers to quantify FABP4 accurately, supporting investigations into cardiovascular diseases, atherosclerosis, and adipocyte function. It is also used in drug development and evaluation of therapeutic interventions targeting metabolic and inflammatory pathways.