A DEXA single-site bone densitometry is a dual-energy X-ray absorptiometry scan that measures bone mineral density at one specific skeletal location (commonly hip, spine, or forearm). It helps diagnose osteoporosis, estimate fracture risk, and monitor treatment. The test is quick, noninvasive, uses very low radiation, and reports T-scores and Z-scores comparing your bone density to reference norms.

A DEXA scan is quick. The scan itself usually takes about 5–15 minutes; including check-in, positioning and brief instructions, expect the appointment to be about 10–30 minutes. If whole-body composition or extra images are requested, allow up to 30 minutes. No special preparation is normally needed beyond wearing loose clothing and removing jewelry or metal.

A DEXA scan is a quick, painless X‑ray test for bone density. You lie on a padded table, remove metal and jewelry, and a technician positions your hip and spine (or whole body). A low‑dose X‑ray arm passes overhead while you lie still—scan time is typically 10–20 minutes and may require brief breath holds. Images are analyzed to give T‑ and Z‑scores for fracture risk.

A DEXA scan is designed to measure bone mineral density and is not a diagnostic tool for tumors. It may incidentally highlight large or dense bone lesions, but it lacks sensitivity and detail to identify or characterize tumors. If a suspicious abnormality is seen or symptoms suggest a tumor, targeted imaging (X‑ray, CT, MRI, PET) and specialist assessment or biopsy are required for diagnosis.

A standard three-site DEXA measures bone mineral density at the lumbar spine (L1–L4), the hip (usually femoral neck and total hip), and the forearm (distal radius). These sites are chosen because they reflect common fracture locations and provide reliable indicators of overall bone health for diagnosing osteoporosis and monitoring treatment.

If you mean DEXA (bone‑density) scans, they are the clinical standard and are highly accurate for measuring bone mineral density and fracture risk. Accuracy can be affected by body size, spinal osteoarthritis, vertebral fractures, metal implants, and differences between machines or operators. Precision uses T‑ and Z‑scores; repeat scans on the same machine give the most reliable comparisons.