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CT Abdomen and Pelvis With and Without Intravenous Contrast

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

A CT scan uses X-rays to examine the abdomen and pelvis, with and without IV contrast, to evaluate organs, blood vessels, bowel, and surrounding tissues.

Quick summary

["This scan can help detect and evaluate many abdominal and pelvic problems, including stones, infections, bleeding, and masses."]

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

Key facts at a glance

LOINC
87853-8
Short code
CT Abd+Pel + CTA AA WO+W contr IV
Synonyms
CT Abd+Pel + CTA AA WO+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-ct-angio
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, creates detailed cross-sectional images of the abdomen and pelvis using X-rays. Images may be taken before and after intravenous contrast is given to improve the visibility of organs, blood vessels, and other tissues.

Why might I need this test?

Your clinician may order this scan to investigate unexplained abdominal or pelvic pain, swelling, fever, nausea, or changes in bowel habits. It can also be used to evaluate kidney stones, infection, inflammation, bleeding, obstruction, injury, or suspicious masses.

How is the test performed?

You will lie on a padded table while a CT scanner rotates around you and takes X-ray images. If contrast is used, it is usually injected through a small IV in your arm, and the scan may include images taken both before and after the injection.

How do I prepare for the test?

Follow your appointment instructions about eating, drinking, and medicines. Tell the care team about any contrast allergy, kidney disease, pregnancy possibility, implanted devices, or metallic objects in your body before the scan.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

CT abdomen and pelvis with/without IV contrast

Frequently asked questions

Is this CT scan painful?
The scan itself is generally painless, although lying still in the enclosed scanner may feel uncomfortable or claustrophobic. IV contrast can cause a brief warm or cool sensation and may make you feel like you need to urinate.
Do I need to stop taking my medicines?
Usually you should continue prescribed medicines unless your clinician instructs otherwise. Tell the imaging team about diabetes medicines, especially metformin, and any medicine that affects kidney function or bleeding.
What should I do if I am pregnant or might be pregnant?
Tell the care team before the appointment because CT radiation and IV contrast may affect clinical decisions. If contrast was already given while pregnant, contact your clinician for guidance and reassurance.
  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