Deoxypyridinoline EIA is a urinary assay that provides a quantitative measure of the excretion of deoxypyridinoline (DPD) crosslinks as an indicator of bone resorption. Elevated levels of urinary DPD indicate elevated bone resorption in individuals. Measurement of DPD is intended for use as an aid in monitoring bone resorption changes in postmenopausal women receiving hormonal or bisphosphonate antiresorptive therapies and in individuals diagnosed with osteoporosis.