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Computed Tomography Angiography, Abdominal and Pelvic Vessels — With Intravenous Contrast

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

A CT scan that uses intravenous contrast to examine blood vessels supplying the abdomen and pelvis.

Quick summary

["This test helps identify narrowing, blockage, leakage, or other abnormalities in abdominal and pelvic blood vessels."]

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

Key facts at a glance

LOINC
69908-2
Short code
CTA Abd ves+Pelvis ves W contr IV
Synonyms
CTA Abd ves+Pelvis ves 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-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?

CT angiography, or CTA, is an imaging test that uses X-ray computed tomography and injected contrast to show the blood vessels in the abdomen and pelvis.

Why might I need this test?

Your clinician may order CTA to evaluate unexplained abdominal or pelvic pain, symptoms suggesting poor blood flow, or concerns involving an artery or vein. It may also be used to investigate bleeding or the blood supply to an organ or other tissue.

How is the test performed?

You will lie on a CT table while the scanner takes images. Intravenous contrast is usually injected through a vein in your arm, and the scan may be repeated after the contrast reaches the vessels being examined.

How do I prepare for the test?

Follow the preparation instructions provided by the imaging facility, which may include fasting and avoiding certain medicines. Tell the care team about kidney disease, prior contrast reactions, iodine allergy, and pregnancy or possible pregnancy before the scan.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Abnormal findings may indicate a narrowed or blocked vessel, an aneurysm, blood clot, vessel injury, or active bleeding. The results are interpreted together with your symptoms, examination, and other tests by a radiologist and your ordering clinician.

Short name

CTA of the abdomen and pelvis with IV contrast

Frequently asked questions

Is CTA the same as a regular CT scan?
CTA is a specialized CT scan focused on blood vessels. It usually includes intravenous contrast, while a routine CT scan may be performed with or without contrast depending on the body area being examined.
Does the test use radiation?
Yes. CT angiography uses ionizing radiation, and the contrast can provide additional detail about the vessels.
Can I have CTA if I have kidney disease or a prior contrast reaction?
The scan may still be possible, but your care team should know about these conditions before contrast is given. They can assess the risks and may recommend additional precautions or a different imaging test.
  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