The morning void urinary pyridinoline (Pyr), a new marker of bone resorption, was assayed with competitive EIA in patients with various endocrine diseases.

• 用竞争性酶免疫分析法（EIA）测定了内分泌疾病患者空腹晨尿中骨吸收新标志吡啶并啉（Pyr）的浓度。