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CT Chest with Intravenous Contrast

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

A CT scan of the chest using iodinated contrast injected into a vein to provide clearer images of the lungs and surrounding structures.

Quick summary

["This scan uses an IV contrast injection to create detailed images that may help evaluate the lungs, chest tissues, blood vessels, and lymph nodes."]

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

Key facts at a glance

LOINC
24628-0
Short code
CT Chest W contr IV
Synonyms
CT Chest 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?

A chest CT with intravenous contrast is an X-ray–based imaging test that creates detailed pictures of the chest. Iodinated contrast is injected into a vein to help highlight certain blood vessels, lymph nodes, and tissues.

Why might I need this test?

Your clinician may order this test to investigate unexplained symptoms such as coughing, shortness of breath, chest pain, or fever. It can also help evaluate lung conditions, infection, blood clots, tumors, or other abnormalities in the chest.

How is the test performed?

You will lie on a table that moves through the CT scanner while X-ray images are taken. The contrast is usually injected into a vein in your arm before or during the scan, and the procedure generally takes only a few minutes.

How do I prepare for the test?

Follow your imaging center’s instructions, as you may be asked to avoid eating or drinking beforehand. Tell the care team if you have had a reaction to contrast, are pregnant or may be pregnant, or have kidney disease, and bring relevant medication and allergy information.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

CT Chest with IV Contrast

Frequently asked questions

Is this the same as a routine chest CT?
Not necessarily. A contrast-enhanced CT provides clearer images of blood vessels and certain tissues than a non-contrast CT, although the appropriate study depends on your symptoms and what your clinician is evaluating.
Will I need a blood test before receiving contrast?
Sometimes, particularly if you have kidney disease or a prior contrast reaction. The imaging center will tell you whether laboratory testing or other precautions are needed.
Is the CT scan safe if I am pregnant?
Tell the care team if you are pregnant or might be pregnant before the scan. They will consider the clinical need for the test and the risks of both radiation and contrast exposure.
  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