Used in biomedical research to quantify Human METRNL protein levels in biological samples such as serum, plasma, and cell culture supernatants. This ELISA kit enables researchers to study the role of METRNL in metabolic regulation, inflammation, and tissue repair. It is commonly applied in studies related to insulin sensitivity, obesity, diabetes, and neuroinflammation. The assay provides a reliable and sensitive method for detecting changes in METRNL expression under experimental conditions, supporting both clinical research and drug development.