BMD Calculator
Calculate T-scores from bone mineral density (BMD) measurements using NHANES III young-adult reference data.
Reference: Femoral Neck — Female young-adult mean: 0.849 g/cm², SD: 0.111 g/cm²
Disclaimer: This calculator is for educational and research purposes only. It is not intended for clinical diagnosis. T-score classification follows WHO criteria. Always consult a qualified healthcare professional for clinical bone density interpretation.
Methodology
T-Score = (Patient BMD − Young Adult Mean BMD) / Young Adult SD
Reference values are derived from NHANES III data (Looker et al., 1998). The WHO classification uses T-score thresholds: ≥ −1.0 (Normal), −1.0 to −2.5 (Osteopenia), ≤ −2.5 (Osteoporosis).
Sources: Looker AC et al. Updated data on proximal femur bone mineral levels of US adults. Osteoporos Int. 1998;8(5):468-89. WHO Technical Report Series 921 (2003).