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Bone Mineral Density (Bone Mineral Content by Dual-Energy X-Ray Absorptiometry)

Published: August 9, 2026Updated: August 16, 2026

This test measures the amount of mineral (primarily calcium) in your bones to assess bone density. It helps identify conditions like osteoporosis, which increases your risk of fractures.

Quick summary

["Assesses bone health and risk of fractures by measuring bone mineral density."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
24745-2
Short code
XR Petr part temp bone Views
Synonyms
XR Petr part temp bone Views
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
xr
Specimen volume
5 mL
Stability
Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
500
Lipemia max
1000
Icterus max
500
TAT
4–24 hours
Order
routine

How the Test Works

Your doctor will use a specialized X-ray machine to scan specific areas of your body, such as your hips or spine. The machine emits low-energy X-rays that pass through your body and are detected on the other side. The device calculates the amount of bone mineral in the scanned area by measuring how much of the X-rays are absorbed. This process is quick, painless, and typically takes about 10 minutes.

What to Expect Before the Test

No special preparation is needed for this test. You may be asked to remove any jewelry or clothing that covers the scan area. Wear comfortable clothing, and you might be asked to remove a belt or waistband. If you’re pregnant, have a pacemaker, or have any metal implants, inform your healthcare provider before the scan.

What to Expect During the Test

You’ll stand or lie down on a table while the machine moves around you. You may feel a slight pressure as the machine scans your body. The scan itself is painless, but you might hear a clicking or whirring sound as the machine operates. You’ll be able to move around freely during the scan.

What to Expect After the Test

After the scan, you can resume your normal activities immediately. There are no known side effects from this test. Your results will be analyzed by a healthcare professional to determine your bone mineral density and any potential risk for bone-related conditions.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Bone mineral density testing is crucial for diagnosing osteoporosis and other bone-related disorders. Low bone density can increase your risk of fractures, especially in older adults or those with certain medical conditions. Regular monitoring can help manage bone health and prevent fractures by identifying early signs of bone loss.

Short name

Bone Mineral Content Scan

Frequently asked questions

How often should I get this test?
Your doctor will determine the frequency of your bone mineral density tests based on your age, medical history, symptoms, and risk factors for bone diseases. Typically, follow-up tests may be recommended every 1–2 years if you have a confirmed diagnosis of osteoporosis or other bone conditions.
What are the common reasons for getting this test?
Common reasons include diagnosing osteoporosis, monitoring bone health in individuals with a history of fractures, assessing risk in people with conditions like rheumatoid arthritis or hyperthyroidism, or evaluating the effectiveness of treatments for bone-related disorders.
Does this test involve radiation?
Yes, this test uses a low dose of X-rays, which is considered safe for most people. The amount of radiation exposure is minimal and well below levels known to cause harm. Your healthcare provider will ensure the test is necessary and appropriate for your situation.
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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy