Used in biomedical research to quantify R-Spondin 1 (RSPO1) protein levels in cell lysates, tissue extracts, and biological fluids such as serum or plasma. Enables researchers to study RSPO1's role in Wnt signaling pathway activation, which is critical in stem cell regulation, tissue regeneration, and cancer development. Commonly applied in studies related to intestinal stem cell biology, ovarian development, and tumorigenesis. The kit provides a reliable, sensitive, and high-throughput method for detecting RSPO1, supporting both basic research and therapeutic development targeting Wnt-related diseases.