A bone mineral densitometry test (BMD) may also be referred to as a dual-energy x-ray absorptiometry scan (DXA). The BMD is an enhanced form of low energy x-ray technology that is designed to detect possible bone loss or osteoporosis. 

The scan measures the bone density to help your doctor find out if you have osteoporosis or are at risk of bone fractures.

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Bone Density

Bone Mineral Density scans are used to:

• Identify decreases in bone density

• Determine future risk of bone fracture

• Confirm diagnosis of osteoporosis

• Monitor bone density over time, especially if being treated for osteoporosis

• Help your physician suggest steps to protect your bones

Many physicians recommend screening BMD for patients over the age of 50. According to Alberta Health Services a patient over age 50 is able to have a single BMD every 2 years, unless patients are high risk or require more frequent assessments.

If you are under the age of 50 and have the following risk factors, you will likely be recommended for a test:

• Fracture after a minor fall or bump

• Specific risk factors such as older age, certain medications and history of height loss

• Prolonged oral steroid use (e.g. Prednisone)

• Menopause, especially early menopause (before age 45)

• Spine fracture or low bone density identified on x-ray

  Conditions such as:

  • Rheumatoid arthritis

  • Crohn's disease

  • Celiac disease

  • Hyperparathyroidism

  • Overactive thyroid

  • Diabetes

  • Liver or kidney disease and their associated treatments

  • Low body weight (less than 60 kg)

15 - 30 minutes

Please do not take any multivitamins or calcium supplements 24 hours before the ex