Used in bone metabolism research to measure procollagen type I N-terminal propeptide (P1NP) levels in biological samples. This assay helps assess bone formation by quantifying the concentration of P1NP, a biomarker released during the synthesis of type I collagen, the main structural protein in bone. Researchers use this kit in studies related to osteoporosis, fracture healing, and responses to bone-active therapies such as anabolic agents or hormone replacement. The ELISA format allows for sensitive and specific detection, making it suitable for monitoring changes in bone turnover in preclinical and clinical investigations.