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Computed Tomography (CT) Scan of the Spine Without Contrast

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

A CT scan creates detailed cross-sectional images of the spine using x-rays and is performed without injected contrast material.

Quick summary

["This imaging test uses x-rays to evaluate the structure of the spine without intravenous contrast."]

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

Key facts at a glance

LOINC
36530-4
Short code
CT Spine WO contr
Synonyms
CT Spine 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
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 uses x-rays and computer technology to create detailed images of the vertebrae, spinal canal, and surrounding tissues. “Without contrast” means no contrast dye is injected for the scan.

Why might I need this test?

A spine CT may be ordered to evaluate an injury, persistent back or neck pain, suspected fracture, spinal narrowing, disc disease, infection, or a spinal mass. The exact area scanned depends on the clinician’s order.

How is the test performed?

You will lie on a table while an x-ray machine rotates around the area being examined. The scan is usually brief, and a technologist may ask you to hold still or follow breathing instructions.

How do I prepare for the test?

No contrast-specific preparation is usually needed. Wear clothing without metal near the scan area and tell the technologist if you are pregnant or may be pregnant. Follow any additional instructions provided by the imaging facility.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Spine CT without contrast

Frequently asked questions

Does this CT use contrast dye?
No. This is a spine CT performed without injected contrast material. IV contrast may be used for other CT examinations, but it is not part of this test as named.
Is a spine CT the same as an MRI?
No. CT uses x-rays and is especially useful for viewing bone and many acute injuries, while MRI uses a magnetic field and provides detailed images of discs, nerves, and other soft tissues.
Is there radiation exposure?
Yes. CT scans use a small amount of ionizing radiation. The benefit and risks should be reviewed with your clinician, particularly for pregnancy or repeated imaging.
  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