A T-score of -2.7 most accurately indicates?

• A. Normal bone density
• B. Osteopenia
• C. Osteoporosis
• D. Severe osteopenia

Answer: (C)

A T-score shows how bone density compares to a healthy young adult, expressed as standard deviations from that reference. The more negative the score, the weaker the bone. Normal density is around -1.0 or higher. Osteopenia generally ranges from about -1.0 down to -2.5, indicating lower density but not osteoporosis. A score of -2.7 is more negative than -2.5, placing it in the osteoporosis range, which means bones are significantly weaker and fracture risk is higher. In many guidelines, severe osteoporosis describes osteoporosis with a fragility fracture, but the T-score alone of -2.7 already meets the osteoporosis classification.