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CT Scan of the Spine With Contrast

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

A CT scan uses X-rays and contrast material to create detailed images of the spine, spinal canal, and surrounding structures.

Quick summary

["This test can help identify problems affecting the spine, spinal cord, or surrounding tissues."]

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

Key facts at a glance

LOINC
47985-7
Short code
CT Spine W contr IT
Synonyms
CT Spine W contr IT
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
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?

A spine CT is an imaging test that uses X-rays and a computer to create cross-sectional images of the vertebrae and spinal canal. Contrast material may be used to improve the visibility of selected tissues, blood vessels, or the area around the spinal cord.

Why might I need this test?

This test may be ordered to evaluate back or neck pain, numbness, weakness, trauma, or other symptoms suggesting a spinal condition. It can also help assess abnormalities involving the vertebrae, spinal canal, discs, or surrounding tissues.

How is the test performed?

You will lie on a scanning table while the CT machine moves around the area being examined. The scan is generally painless; if contrast is used, you may briefly feel warmth or a cold sensation when it is administered. The technologist will tell you how to remain still and may ask you to hold your breath during images.

How do I prepare for the test?

Follow the imaging center's instructions, because preparation can depend on how the contrast is given and which part of the spine is being examined. You may be asked about allergies, kidney function, pregnancy, and medications such as metformin. Remove metal objects and inform the staff if you have any implanted devices.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Spine CT With Contrast

Frequently asked questions

Is a CT scan of the spine with contrast painful?
The scan itself is generally painless. If contrast is injected, a brief warm or cool sensation may occur, and some people may feel nauseated or have a mild headache.
Does this test use radiation?
Yes. A CT scan uses a small amount of ionizing radiation, and the dose varies with the type of scan and the area examined.
Will I be able to drive after the test?
Most people can resume normal activities immediately. If sedation is used or contrast is placed in the spinal canal, the imaging center may recommend observation or arrange transportation before you leave.
  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