Used in immunological research to quantify levels of intercellular adhesion molecule 3 (ICAM-3/CD50) in biological samples such as serum, plasma, or cell culture supernatants. This ELISA kit enables researchers to study the role of ICAM-3 in immune cell interactions, particularly in early immune responses, antigen presentation, and T-cell activation. It is commonly applied in studies related to inflammation, autoimmune diseases, and infectious diseases where ICAM-3 expression on leukocytes serves as a biomarker. The assay provides a sensitive and specific method for monitoring changes in ICAM-3 levels under experimental or clinical conditions, supporting both basic research and biomarker validation in human and animal models.