Used in immunological research to quantify mouse interleukin-31 (IL-31) levels in biological samples such as serum, plasma, or cell culture supernatants. This ELISA kit is particularly valuable in studies related to inflammatory skin diseases, pruritus (itching), and allergic responses, as IL-31 is known to play a key role in mediating itch and skin inflammation. Researchers use this kit to evaluate immune responses in mouse models of atopic dermatitis, eczema, and other dermatological conditions. It also supports drug development and preclinical testing of anti-inflammatory or anti-pruritic therapies by providing a reliable method to assess changes in IL-31 expression.