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Computed Tomography of the Abdomen with Intravenous Contrast

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

An abdominal CT scan uses X-rays and intravenous contrast to create detailed images of the abdominal organs and surrounding structures.

Quick summary

["This scan can help identify conditions affecting the abdominal organs, blood vessels, bowel, and other structures."]

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

Key facts at a glance

LOINC
79103-8
Short code
CT Abd W contr IV
Synonyms
CT Abd 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?

Computed tomography, or CT, combines X-rays with a computer to produce detailed cross-sectional images of the abdomen. Intravenous contrast is injected into a vein to improve the visibility of blood vessels and many abdominal organs.

Why might I need this test?

An abdominal CT with contrast may be used to evaluate unexplained abdominal pain, swelling, or symptoms involving the kidneys, liver, pancreas, or bowel. It may also help assess masses, inflammation, infection, bleeding, injury, obstruction, or stones.

How is the test performed?

You lie on a table while an X-ray machine rotates around your body. The scan usually takes a short time, and intravenous contrast is given through a vein in your arm unless the imaging center has a different plan.

How do I prepare for the test?

Follow the imaging center's instructions about eating, drinking, and medications. Tell the staff about any prior contrast reaction, kidney disease, severe allergy, or pregnancy, because these factors may affect the procedure or the type of contrast used.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

The scan may reveal an abnormal mass, fluid collection, inflammation, infection, bleeding, bowel obstruction, organ injury, or kidney stones. Findings are interpreted together with your symptoms, medical history, and other tests. The radiologist's report is reviewed by your healthcare professional, who can explain what the findings mean for you.

Short name

Abdominal CT with IV contrast

Frequently asked questions

Is this abdominal CT scan the same as a routine X-ray?
No. CT uses multiple X-ray images and a computer to create cross-sectional views, so it shows abdominal structures in much greater detail.
Why is intravenous contrast used?
Intravenous contrast helps highlight blood vessels and many organs, allowing the radiologist to identify or evaluate abnormalities more clearly.
Will I need to fast before the scan?
Fasting depends on the specific CT protocol and the instructions provided by the imaging center. Follow those instructions even if another abdominal imaging test allowed you to eat.
  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