Used in immunological research to quantify levels of soluble L-selectin (CD62L) in biological samples such as serum, plasma, or cell culture supernatants. This ELISA kit enables researchers to study leukocyte trafficking, inflammation, and immune system activation, as L-selectin plays a key role in lymphocyte homing and the initial adhesion of white blood cells to endothelial cells at sites of inflammation. It is commonly used in studies related to autoimmune diseases, infections, and cancer metastasis where cell adhesion and migration are involved. The assay provides a sensitive and specific method for monitoring changes in L-selectin expression under various experimental or clinical conditions.