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Computed Tomography (CT) Scan of a Joint Without Contrast

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

A CT scan uses X-rays to create detailed images of a joint. This version is performed without injected contrast material.

Quick summary

["This imaging test provides detailed views of joint structures without the use of injected contrast."]

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

Key facts at a glance

LOINC
37282-1
Short code
CT SC joint WO contr
Synonyms
CT SC joint 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 joint CT scan uses X-rays and a computer to create cross-sectional images of a joint. It can show bones and surrounding tissues in greater detail than a standard X-ray.

Why might I need this test?

Your clinician may order this test to evaluate a suspected fracture, joint injury, arthritis, infection, or an abnormality in the bone or surrounding tissues.

How is the test performed?

You will lie on a table while a CT scanner rotates around the joint and takes X-ray images. The procedure is generally painless and usually takes only a few minutes.

How do I prepare for the test?

Fasting is usually not required, and no injected contrast is used. Remove loose metal objects and tell the imaging staff if you are pregnant, have recently had surgery, or cannot remain still during the scan.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Abnormal findings may include a fracture, bone irregularity, narrowing of the joint space, bone spurs, fluid collections, or other structural changes. These findings must be interpreted by a radiologist together with your symptoms, examination, and other tests because they do not always identify the exact cause of joint problems.

Short name

Joint CT scan without contrast

Frequently asked questions

Will I receive contrast material?
No. This test is performed without injected contrast, so there is usually no need for contrast-related preparation.
Is a joint CT scan the same as an MRI?
No. CT uses X-rays and is especially useful for viewing bone, while MRI uses a magnetic field and radio waves and often provides more detail about cartilage, tendons, and other soft tissues.
How soon will the results be available?
A radiologist will review the images and send a report to your ordering clinician. The timing of your results and any follow-up discussion depend on your healthcare provider's process.
  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