Advanced Bone Density T-Score Calculator
Educational estimate only; not a medical diagnosis. Evaluate bone mineral density (BMD) T-scores and skeletal classification.
Bone Density Evaluation Outputs
Calculated T-Score
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Calculated Z-Score (Age-Matched)
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WHO Clinical Classification
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WHO T-Score Diagnostic Spectrum Benchmark
+1.0 or higher
-1.0
-2.5
-4.0 or lower
Diagnostic Classification: --
Understanding Bone Mineral Density & T-Scores
A T-score compares an individual's bone mineral density (BMD) to the peak bone mass expected in a healthy young adult of the same sex. It is expressed in standard deviations (SD) from that reference mean, serving as the primary diagnostic metric established by the World Health Organization (WHO) for assessing fracture risk.
WHO Diagnostic Criteria
- Normal: T-score of -1.0 or higher.
- Osteopenia: T-score between -1.0 and -2.5, indicating lower than peak bone mass.
- Osteoporosis: T-score of -2.5 or lower, indicating significantly increased risk of fragility fractures.
Medical Disclaimer
This calculator is provided strictly for educational self-evaluation and demonstration purposes. Official clinical evaluations, dual-energy X-ray absorptiometry (DEXA) scans, and formal diagnosis must be interpreted by a licensed physician or endocrinologist.