Bone density (DXA) scan: screening for osteoporosis

A DXA (dual-energy X-ray absorptiometry) scan uses a very low dose of X-rays to measure bone mineral density, usually at the hip and spine. It is the standard test to screen for osteoporosis. The U.S. Preventive Services Task Force recommends osteoporosis screening for women aged 65 and older, and for younger postmenopausal women at increased risk of fracture.

What the results mean

Results are reported as a T-score, comparing your bone density with that of a healthy young adult. Lower scores indicate lower bone density, grouped as normal, low bone mass (osteopenia) or osteoporosis. Your clinician combines this with your other risk factors to decide on next steps.

What the scan is like

• It is quick and painless; you lie on a table while a scanner passes over you.
• Tell the technician if you have recently had a barium study or contrast scan.

When to talk with a healthcare professional

• You want to know whether a test is right for you, and when.
• You have a result and want to understand what it means for your health — your clinician interprets results in the context of your history.
• You have had a fracture from a minor fall, lost height, or have risk factors such as early menopause, low body weight, smoking or long-term steroid use.

How Dot can help

Dot can help you keep track of symptoms and questions to bring to your appointment. Dot does not order or interpret lab tests; for clinical care, Kindr Care connects you with licensed clinicians.

How Dot works · Kindr Care clinical care

Related topics

• Bone health
• Vitamin D test
• Muscle & strength
• Postmenopause
• Menopausal hormone therapy

Sources

1. MedlinePlus, U.S. National Library of Medicine. Bone Density Scan.
2. U.S. Preventive Services Task Force. Osteoporosis to Prevent Fractures: Screening (2025).
3. National Institute on Aging (NIH). Osteoporosis.

This page is educational and not medical advice. Dot does not diagnose or prescribe. See our editorial policy.