C-telopeptide is widely used in medical diagnostics, particularly in the assessment of bone metabolism. It serves as a biomarker for bone resorption, helping to diagnose and monitor conditions such as osteoporosis, Paget's disease, and other bone-related disorders. By measuring its levels in blood or urine, healthcare professionals can evaluate the rate at which bone is being broken down, aiding in the early detection of bone loss and the effectiveness of treatments aimed at reducing bone resorption. This application is crucial for managing patients at risk of fractures or those undergoing therapy for bone diseases.