Used in biomedical research to detect and quantify levels of Neuregulin-4 (NRG4) in human biological samples such as serum, plasma, and cell culture supernatants. The kit is commonly applied in studies related to metabolic disorders, including obesity, insulin resistance, and non-alcoholic fatty liver disease (NAFLD), where NRG4 plays a role in regulating energy metabolism and maintaining metabolic homeostasis. It is also utilized in cardiovascular and neurological research due to NRG4's involvement in tissue protection and signaling pathways. The ELISA format allows for high sensitivity and specificity, making it suitable for both clinical and experimental settings where accurate measurement of NRG4 concentration is required.