Dexa T score reference is determined by comparison to which reference?

Dexa T score reference is determined by comparison to which reference?

• A. Compared to 30 year old
• B. Compared to another patient in the same age group
• C. Compared to population norms
• D. Relative to baseline

Answer: (A)

The T-score is defined as how many standard deviations your bone mineral density deviates from the mean of a young, healthy adult population, usually represented by a 30-year-old of the same sex. This peak bone mass reference lets us assess how far a person’s BMD has fallen from what is considered normal peak bone density. In other words, T-score compares to peak bone mass rather than to peers of the same age or to a general baseline. That’s why it’s different from a Z-score, which uses age- and sex-matched normative data.

The T-score is defined as how many standard deviations your bone mineral density deviates from the mean of a young, healthy adult population, usually represented by a 30-year-old of the same sex. This peak bone mass reference lets us assess how far a person’s BMD has fallen from what is considered normal peak bone density.

In other words, T-score compares to peak bone mass rather than to peers of the same age or to a general baseline. That’s why it’s different from a Z-score, which uses age- and sex-matched normative data.