Used in research to quantitatively measure levels of the P2X4 receptor protein in human biological samples such as cell lysates or tissue extracts. This ELISA kit enables scientists to study the expression and regulation of P2X4, a purinergic receptor involved in inflammatory responses, neuropathic pain, and immune cell activation. It is particularly valuable in neuroscience and immunology studies where understanding purinergic signaling pathways is critical. The assay supports high-throughput screening and preclinical evaluation of therapeutic agents targeting P2X4-related pathways.