CT Spine Density Without Contrast (Deprecated Test)
A CT scan of the spine performed without iodinated contrast to assess spinal bone density and structural abnormalities.
["This test images the spine without contrast and can provide information about bone density, fractures, and spinal degeneration."]
Key facts at a glance
- LOINC
- 79100-4
- Short code
- Deprecated Spine CT.Dens WO contr
- Synonyms
- Deprecated Spine CT.Dens WO contr
- Category
- liver
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- ct-densitometry
- 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 is this test?
This is a computed tomography (CT) examination of the spine performed without iodinated contrast. CT images show the bones and soft tissues, and the scan may also be used to assess CT density, a measure related to how much material absorbs X-rays.
Why might I need this test?
A spine CT may be ordered to evaluate unexplained back or neck pain, suspected fractures, vertebral abnormalities, or degenerative changes. Density information may also help identify reduced or increased bone mineralization when interpreted with the rest of the scan.
How is the test performed?
You lie on a CT table while an X-ray machine rotates around the area being examined. The scan is quick and generally painless, and a radiologist reviews the images and reports the findings.
How do I prepare for the test?
Because this examination is performed without iodinated contrast, fasting is usually not required. Wear comfortable clothing without metal fasteners, and tell the care team if you are pregnant, may be pregnant, or have had a serious reaction to contrast previously.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Lower CT density may be associated with reduced bone mineralization, such as osteopenia or osteoporosis, while higher density can occur with certain degenerative or sclerotic bone changes. Results vary with spinal level, scan technique, and other factors, so a radiologist interprets the measurement alongside the images and your symptoms. A CT density finding alone does not establish a diagnosis.
Short name
Spine CT without contrast
Frequently asked questions
Will I receive contrast for this test?
Is a spine CT the same as a dedicated bone-density test?
Why is the test described as deprecated?
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