Used in biomedical research to quantify sphingosine kinase 1 (SPK1) levels in human samples such as serum, plasma, and cell lysates. SPK1 is an enzyme involved in sphingolipid metabolism and plays a role in cell proliferation, survival, and inflammation. This ELISA kit enables researchers to study SPK1's involvement in diseases like cancer, autoimmune disorders, and cardiovascular conditions. It is commonly used in drug development and biomarker validation studies to assess changes in SPK1 expression under experimental treatments or disease states.