A T score less than or equal to -2.5 is diagnostic of osteoporosis.

T分数小于等于-2.5的患者会被确诊为患有骨质疏松。

The test compares an individual's bone density to that of a normal adult which yields the result or the T score.

此法将患者的骨密度数据与正常成年人的进行对比，从而得出结果或所谓的T分数。

Diagnosis is done with a dual-energy X-ray absorptiometry or DEXA scan, where a T score equal to or less than -2.5 equals osteoporosis.

诊断是借助双能X线吸收法（DEXA扫描）完成，当检验结果中T分数小于等于-2.5时，可确诊为骨质疏松。