A DEXA scan is a high-precision X-ray test used to measure bone density and bone loss. If your bone density is lower than normal, you might have osteoporosis. DEXA stands for dual-energy X-ray absorptiometry, which accurately measures bone mineral density. The test is non-invasive, quick, and accurate, with very low radiation. It usually scans the lower spine and hips. Results are interpreted by a radiologist and shared with you and your doctor in a few days. If you have osteoporosis, your doctor will discuss treatment options, which may include lifestyle changes or medications. Maintaining a healthy lifestyle is critical for preventing and treating osteoporosis.