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CT Scan of the Chest and Abdomen with Intravenous Contrast

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

A CT scan uses X-rays to create detailed images of the chest and abdomen. Intravenous contrast may be given to improve the visibility of blood vessels and organs.

Quick summary

["This scan evaluates structures in the chest and abdomen and may help identify masses, infection, bleeding, or other abnormalities."]

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

Key facts at a glance

LOINC
42275-8
Short code
CT Chest+Abd W contr IV
Synonyms
CT Chest+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?

This is a computed tomography (CT) scan that produces detailed cross-sectional images of the chest and abdomen. Intravenous contrast is a dye given through a vein to help highlight certain tissues, blood vessels, and areas of inflammation.

Why might I need this test?

Your clinician may order this scan to investigate unexplained symptoms, evaluate an injury, or look for infection, bleeding, a mass, organ enlargement, or other changes. It may also be used to monitor an existing condition or assess the response to treatment.

How is the test performed?

You will lie on a table that moves through the CT scanner while X-ray images are taken. If contrast is included, it is usually injected into a vein in your arm, and the scan may take longer than a CT scan performed without contrast.

How do I prepare for the test?

Follow the instructions provided by the imaging facility. You may need to avoid food or drink for several hours, and you may be asked about contrast allergies, kidney function, pregnancy, medications, and metal in your body. Tell the care team if you have reacted to contrast before.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

CT Chest and Abdomen with IV Contrast

Frequently asked questions

Is this CT scan the same as a standard chest X-ray?
No. CT creates many detailed cross-sectional images and generally shows more anatomy than a standard X-ray.
What is intravenous contrast used for?
Intravenous contrast can make blood vessels and certain tissues easier to see. It may help identify or clarify abnormalities, although some scans can be performed without it.
Will I need to stay at the facility after the scan?
Most CT scans are outpatient procedures, and you can usually leave shortly afterward. If contrast was given, the facility may observe you briefly or provide instructions about possible delayed reactions.
  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