Beta-CTx, or Beta C-terminal telopeptides are fragments formed when parts of bone, namingly DPD, break down. The break down of bone, also known as resorption, is a normal process in bone regulation, but can if occurring at high rates can significantly weaken and reduce the density of bone.
What might a low result mean?
Low levels of Beta-CTx are normal. For those taking anti-resorptive agents such as hormone replacement therapy and bisphosphonates, levels should gradually drop from high to normal/low.
What might a high result mean?
Raised levels of Beta-CTx are found in those with conditions such as osteoporosis, hyperparathyroidism and cancer that has spread to bones. This is because bone density is greatly reduced and broken down in these conditions.