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Computed Tomography (CT) Scan of Liver Without Contrast

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

A CT scan uses X-rays to create detailed images of the liver. This test is performed without injecting contrast dye.

Quick summary

["This scan provides detailed liver images without the use of injected contrast dye."]

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

Key facts at a glance

LOINC
30611-8
Short code
CT Liver WO contr
Synonyms
CT Liver 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 liver CT scan is an imaging test that uses X-rays and computer technology to create detailed pictures of the liver. In this version, contrast dye is not injected.

Why might I need this test?

A CT scan may be ordered to investigate unexplained abdominal pain, examine an abnormality found during another exam, or assess the liver after an injury. It can also help evaluate the size, shape, and appearance of the liver and nearby structures.

How is the test performed?

You will lie on a table that moves through a doughnut-shaped X-ray scanner. The scanner takes pictures from several angles, and a computer creates detailed images for a radiologist to review.

How do I prepare for the test?

Follow the instructions provided by the imaging center. You may be asked to avoid eating or drinking for a short period, remove metal objects, and change into a gown. Tell the care team if you are pregnant, may be pregnant, or have had a reaction to contrast dye.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

The scan may reveal changes in liver size or structure, cysts, fluid collections, calcifications, or a possible mass. These findings can have many causes and must be interpreted with your symptoms, medical history, examination, and other tests. A radiologist will provide the results to your ordering clinician.

Short name

CT Liver Without Contrast

Frequently asked questions

Does this test use contrast dye?
No. This version of the CT scan is performed without injected contrast dye.
Is a liver CT scan painful?
The scan itself is generally painless. Some people may feel brief discomfort from the pressure of the scanner or from lying still on the table.
How soon will I receive the results?
A radiologist will review the images and send a report to your ordering clinician. The timing of the final explanation may vary, so ask your care team when to expect the results.
  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