Facial Bone Cortical Thickness by Computed Radiography (X-ray)
This test measures the thickness of the outer layer of bone in the facial region using X-ray imaging. It helps assess bone density and structural integrity.
["This test evaluates facial bone density and structure using X-rays."]
Key facts at a glance
- LOINC
- 60658-2
- Short code
- Face L1 to chin/Face low Skull XR
- Synonyms
- Face L1 to chin/Face low Skull 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-measured
- 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
What This Test Measures
The test focuses on the cortical bone—also called the outer layer of bone—in the facial bones (e.g., maxilla, mandible). By analyzing X-ray images, healthcare providers can determine how thick this layer appears, which can indicate overall bone health and potential risks for conditions like osteoporosis or fractures.
Why It’s Done
Your doctor may order this test if you have symptoms of bone thinning (e.g., pain, fractures, or changes in facial appearance), are at higher risk for osteoporosis, or require evaluation before certain procedures (e.g., dental surgery). It can also help monitor conditions affecting bone density.
How It’s Performed
You’ll lie down on an X-ray table while a specialized imaging device captures images of your facial bones. No special preparation is needed, but you may need to remove jewelry or metal objects. The procedure is quick and painless.
What to Expect After
You can resume normal activities immediately. There are no restrictions, but if you have concerns about radiation exposure (though very low in this test), discuss it with your provider.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Thinner cortical bone may signal underlying conditions like osteoporosis, metabolic bone diseases, or long-term health issues affecting bone strength. While facial bones are less commonly affected than spine or hip bones, changes can still indicate systemic bone health risks. Results help guide treatment decisions or preventive strategies.
Frequently asked questions
Will this test show osteoporosis?
How long will I need to wait for results?
Does this test use radiation?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
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.
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