DEXA Bone Density Scan

A dual-energy X-ray absorptiometry (DEXA) scan measuring bone mineral density to assess osteoporosis risk and fracture probability. The quick, low-radiation scan provides T-scores and Z-scores for clinical interpretation.

DEXA (dual-energy X-ray absorptiometry) is the gold-standard method for measuring bone mineral density and is the primary diagnostic tool for osteoporosis. The scan uses two X-ray beams at different energy levels to distinguish bone from soft tissue, producing precise measurements of bone density at clinically relevant sites -- typically the lumbar spine and hip. Results are reported as T-scores (comparison to a healthy young adult reference population) and Z-scores (comparison to age-matched peers). A T-score of -1.0 or above is considered normal, between -1.0 and -2.5 indicates osteopenia (reduced bone density), and -2.5 or below indicates osteoporosis. These scores directly inform fracture risk assessment and guide decisions about calcium and vitamin D supplementation, weight-bearing exercise, and pharmacological treatment. The scan takes approximately 10 to 15 minutes, uses minimal radiation (far less than a standard chest X-ray), and requires no preparation or fasting. It is particularly relevant for postmenopausal women, men over 50, individuals with a family history of osteoporosis, those taking medications that affect bone density (such as corticosteroids), and athletes in low-impact sports who may have lower bone density despite high fitness levels. Prescan coordinates the DEXA appointment at a partner facility in Vienna and provides the results with clinical context.