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Carpal Bone Mineral Density (LXR - Lateral X-ray)

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

This test measures the density of bones in your wrist (carpal bones) using an X-ray. It helps assess bone health and identify conditions like osteoporosis.

Quick summary

["Bone density X-rays can detect weak bones early, supporting treatment decisions for conditions like osteoporosis."]

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

Key facts at a glance

LOINC
26104-0
Short code
Deprecated Carpal bones-L XR
Synonyms
Deprecated Carpal bones-L XR
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

Why This Test Is Done

Your healthcare provider may order this test if you have symptoms of bone weakness, a history of fractures, or risk factors for osteoporosis (e.g., low body weight, family history, or long-term steroid use). It’s also used to monitor bone health in certain chronic conditions or after treatments like hormone therapy.

What to Expect Before the Test

No special preparation is needed. You’ll wear a gown, and the X-ray technician will position your wrist carefully. You may feel a slight pressure, but no pain. If you’re pregnant or have metal implants, let your provider know before the test.

What Happens During the Test

The test involves taking X-ray images of your wrist from the side (lateral view). The images show bone density, helping your provider compare it to standard measurements.

What the Results Mean

Results are compared to a reference range based on age, sex, and body size. Lower density may indicate osteoporosis or other bone-related issues, while higher density suggests stronger bones. Your provider will discuss findings with you.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Frequently asked questions

Will I need to take any special steps before this test?
No special steps are required, but avoid wearing jewelry or clothing with metal fasteners on your wrist. If you have concerns about radiation exposure, discuss them with your provider—they’ll guide you on safety measures.
How long will the test take?
The test itself takes only a few minutes, but the overall appointment may last about 15–20 minutes, including preparation and review of results.
Can I eat or drink before this test?
You can eat and drink normally before the test, as no fasting is required. If you’re taking medications, ask your provider whether to pause them temporarily.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

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