Used in biomedical research to quantitatively measure levels of PLCβ4 enzyme in human tissue extracts or biological fluids. This assay helps investigate signaling pathways involving G-protein coupled receptors, particularly those related to calcium mobilization and phosphoinositide metabolism. Commonly applied in studies of developmental disorders, cardiovascular function, and neurological diseases where PLCβ4 expression may be altered. The kit enables high-throughput analysis in cell lysates and serum samples, supporting both basic research and biomarker validation.