Which T-score range defines normal bone mineral density?

Which T-score range defines normal bone mineral density?

• A. ≥-1.0
• B. -1.0 to -2.5
• C. -2.5 to -3.5
• D. -3.5 and below

Answer: (A)

T-scores show how your bone mineral density compares to a young healthy reference population, expressed in standard deviations from the mean. Normal bone mineral density is defined as a T-score of -1.0 or higher, meaning your density is within 1 standard deviation of the young adult reference value. The ranges below reflect progressively lower bone density: -1.0 to -2.5 is osteopenia (low bone mass but not osteoporosis), and -2.5 and below indicates osteoporosis (with -3.5 and below sometimes described as severe osteoporosis). So the normal range is a T-score ≥ -1.0.

T-scores show how your bone mineral density compares to a young healthy reference population, expressed in standard deviations from the mean. Normal bone mineral density is defined as a T-score of -1.0 or higher, meaning your density is within 1 standard deviation of the young adult reference value. The ranges below reflect progressively lower bone density: -1.0 to -2.5 is osteopenia (low bone mass but not osteoporosis), and -2.5 and below indicates osteoporosis (with -3.5 and below sometimes described as severe osteoporosis). So the normal range is a T-score ≥ -1.0.