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CT Scan of the Larynx with Intravenous Contrast

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

A CT scan uses X-rays and intravenous contrast to create detailed images of the larynx and nearby structures in the neck.

Quick summary

["This scan helps evaluate abnormalities of the larynx, including inflammation, injury, narrowing, or growths."]

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

Key facts at a glance

LOINC
36229-3
Short code
CT Larynx W contr IV
Synonyms
CT Larynx 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 larynx CT scan is an imaging test that produces detailed pictures of the voice box and surrounding neck tissues. Intravenous contrast is a special dye injected into a vein to make certain tissues and blood vessels easier to see.

Why might I need this test?

Your clinician may order this scan to evaluate persistent throat or voice symptoms, inflammation, infection, trauma, airway narrowing, or a suspected growth. It may also be used to assess the spread of a nearby condition or plan treatment.

How is the test performed?

You will lie on a table that moves through the CT scanner while X-ray images are taken. A technician will usually inject intravenous contrast through a vein, and the scan itself is quick, although the full visit may take longer.

How do I prepare for the test?

Follow the instructions provided by the imaging center, which may include avoiding food or drink for a short period. Tell the care team about contrast allergies, kidney disease, pregnancy or possible pregnancy, and any medications such as metformin before the scan.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

The scan may reveal inflammation, infection, trauma, airway narrowing, cysts, or growths involving the larynx and nearby structures. Abnormal findings can help your clinician determine the cause of symptoms and decide on further testing or treatment. The radiologist's report and your clinician's interpretation are needed to understand the results.

Short name

CT larynx with IV contrast

Frequently asked questions

Does this test use radiation?
Yes. CT scans use a small amount of ionizing radiation, and intravenous contrast may also be used to improve image detail.
Is the CT scan painful?
The scan itself is generally painless, but the injection of contrast may cause a brief warm or cool sensation. You may be asked to remain still and briefly hold your breath during images.
How soon will I receive the results?
A radiologist will prepare a report for your ordering clinician, who can explain the findings and next steps. The timing of result availability varies by the imaging center and the urgency of the examination.
  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