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CT Scan of the Right Lower Extremity Without Contrast

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

A CT scan uses X-rays to create detailed images of the right leg and nearby structures without injected contrast dye.

Quick summary

["This scan provides detailed images of the right leg to help evaluate injuries, bone abnormalities, swelling, or other suspected conditions."]

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

Key facts at a glance

LOINC
36454-7
Short code
CT LE-R WO contr
Synonyms
CT LE-R 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?

This is a computed tomography, or CT, scan of the right lower extremity. It may include the thigh, knee, lower leg, ankle, or foot, depending on the area being evaluated. No contrast dye is injected for this version of the scan.

Why might I need this test?

A right-leg CT may be ordered to evaluate a suspected fracture, infection, tumor, joint problem, or soft-tissue injury. It can also help identify the cause of unexplained pain, swelling, or reduced mobility and may guide treatment or further testing.

How is the test performed?

You will lie on a padded table while a CT scanner circles the area being examined. The scan is generally painless and usually takes less than 10 to 30 minutes, although the exact time depends on the body region and the complexity of the examination.

How do I prepare for the test?

Wear comfortable clothing that does not contain metal, such as zippers, buttons, or snaps. Tell the imaging staff if you are pregnant or may be pregnant, and follow any instructions about removing jewelry, assistive devices, or items near the scan area.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Right Leg CT Without Contrast

Frequently asked questions

Does this CT scan use contrast dye?
No. The words “without contrast” mean that contrast dye will not be injected. The scan still uses X-rays and computer technology to create detailed images.
Is a CT scan of the right leg painful?
The scan itself is generally painless. You may need to remain still, and the scanner may provide instructions or positioning support for the area being examined.
How soon will I receive the results?
A radiologist will interpret the images, and the report will usually be sent to your ordering healthcare professional. The timing for you to receive the results and discuss them depends on the facility and the urgency of your evaluation.
  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