Used in biomedical research to quantify phosphatidylinositol levels in human biological samples such as serum, plasma, and cell lysates. This ELISA kit enables researchers to study intracellular signaling pathways involving phosphoinositides, which play key roles in cellular processes like growth, proliferation, and apoptosis. It is particularly useful in metabolic and oncology studies where dysregulation of PI signaling is investigated. The assay provides a sensitive and specific method for detecting PI concentrations, supporting research in diabetes, cancer, and neurodegenerative diseases.