Bone density testing intervals and common sense.

Measurement of bone mineral density (BMD) is underutilized, contributing to the underdiagnosis and undertreatment of osteoporosis. Appropriate patient selection for BMD testing leads to more people being treated, fewer fractures, and a decrease in fracture-related health care costs. Although there are well-established indications for BMD testing, it is less clear when a BMD test should be repeated for a patient who does not have osteoporosis and is found to be at low fracture risk with initial testing. BMD testing intervals should be individualized according to the likelihood that the results will influence treatment decisions.