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CT Angiography, Abdomen and Aorta — With Intravenous Contrast

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

A CT scan uses X-rays and intravenous contrast to examine the abdominal aorta and nearby blood vessels for narrowing, blockage, aneurysm, or dissection.

Quick summary

["This CT angiogram helps evaluate the abdominal aorta and nearby blood vessels using intravenous contrast."]

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

Key facts at a glance

LOINC
82677-6
Short code
CTA Abd Aorta W contr IV
Synonyms
CTA Abd Aorta 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?

This is a CT angiogram, an X-ray–based imaging study of the abdominal aorta and nearby blood vessels. Intravenous contrast is used to make the blood vessels easier to see.

Why might I need this test?

It may be ordered to evaluate an abdominal aortic aneurysm, a tear in the aortic wall called a dissection, or narrowing or blockage involving the aorta or nearby vessels. It may also be used to assess certain symptoms or plan other procedures.

How is the test performed?

You will lie on a moving table while a CT scanner takes detailed pictures. Intravenous contrast is usually injected through a vein in your arm, and the scan takes only a short time, although breathing instructions may be given.

How do I prepare for the test?

Your imaging center will provide specific instructions. Tell the care team if you have had a reaction to contrast, have kidney disease, are pregnant or may be pregnant, or take medicines such as metformin; follow any fasting or medication instructions you receive.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Abnormal findings may include an aneurysm, aortic dissection, narrowing, blockage, or an irregular appearance of the abdominal aorta or nearby vessels. The results should be interpreted by your clinician in the context of your symptoms, medical history, and other tests.

Short name

CT angiogram of the abdomen and aorta

Frequently asked questions

Is this test the same as a routine abdominal CT?
It is a specialized CT study focused on blood vessels. Intravenous contrast and the timing of the images are specifically designed to show the aorta and nearby vessels more clearly.
Does the test use radiation?
Yes. CT imaging uses a small amount of ionizing radiation, and intravenous contrast may also be used.
What should I do if I have had a contrast reaction?
Tell the imaging center and your clinician before the appointment. Previous reactions may affect how the contrast is administered and what precautions are needed.
  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