A bone density test, also known as a DEXA scan, is a painless procedure that measures the density of minerals in the bones. It is the most common way to diagnose osteoporosis, a condition that causes bones to become weak and brittle. While it can be performed on anyone, it is particularly important for women over the age of 65, as they are at an increased risk of developing osteoporosis.
The test is performed using a special X-ray machine that measures the amount of radiation absorbed by the bones. The higher the bone density, the more radiation is absorbed. The results of the test are expressed as a T-score, which compares the patient’s bone density to the average bone density of a healthy young adult of the same sex and race. A T-score of -1 or below is considered to be osteopenia, while a T-score of -2.5 or below is considered to be osteoporosis.
