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T-Score

Meaning

The T-Score is a standardized statistical measure used in clinical medicine, most critically in the diagnosis of osteoporosis, to quantify an individual’s bone mineral density (BMD) relative to the peak bone mass of a healthy young adult of the same sex. This value is calculated as the number of standard deviations the patient’s BMD falls above or below the mean BMD of the young adult reference population. A T-score is a key diagnostic output derived from a Dual-Energy X-ray Absorptiometry (DXA) scan, directly informing the patient’s risk of fragility fracture and the clinical necessity for hormonal or anti-resorptive therapy.