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CT Scan of the Spine With Intravenous Contrast

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

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

Quick summary

["This imaging test can help identify problems affecting the vertebrae, spinal cord, discs, and surrounding tissues."]

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

Key facts at a glance

LOINC
24979-7
Short code
CT T-spine W contr IV
Synonyms
CT T-spine W contr IV
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 CT scan of the spine is an X-ray-based imaging test that creates detailed pictures of the vertebrae, spinal canal, discs, and nearby tissues. Intravenous contrast is injected into a vein to improve the visibility of certain tissues and abnormalities.

Why might I need this test?

This test may be ordered to evaluate back or neck pain, injury, suspected fractures, disc disease, nerve compression, infection, inflammation, or a mass. It may also be used to assess the spine before or during medical treatment.

How is the test performed?

You will lie on a padded table while a CT scanner takes X-ray images from different angles. If contrast is required, it is usually given through a vein in your arm, and the scan typically takes less time than a conventional CT scan.

How do I prepare for the test?

Follow the instructions provided by the imaging facility. Tell your clinician if you are pregnant, have kidney disease, have previously had a serious reaction to contrast, or take medicines that may affect kidney function, because these factors can affect the choice of contrast and preparation.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

CT spine with IV contrast

Frequently asked questions

Is this the same as an MRI?
No. A CT scan uses X-rays and is often faster than MRI, while MRI is generally better for evaluating soft tissues, discs, and the spinal cord without radiation.
Why is intravenous contrast used?
Intravenous contrast can make blood vessels and certain tissues easier to see and may help identify inflammation, infection, bleeding, or a mass.
Does the test involve radiation?
Yes. CT imaging uses ionizing radiation, but the dose is selected by the imaging facility and is kept as low as reasonably achievable for the examination.
  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