CT Nasopharynx with Intravenous Contrast
A CT scan uses X-rays and intravenous contrast to create detailed images of the nasopharynx, the area behind the nose and above the throat.
["This CT scan provides detailed images of the nasopharynx and nearby structures, with contrast improving the visibility of some tissues and abnormalities."]
Key facts at a glance
- LOINC
- 48446-9
- Short code
- CT Nasopharynx W contr IV
- Synonyms
- CT Nasopharynx 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?
Computed tomography, or CT, creates cross-sectional images of the nasopharynx, which is the passage behind the nose and above the throat. Intravenous contrast is given through a vein to help certain tissues, blood vessels, and areas of inflammation appear more clearly.
Why might I need this test?
This test may be ordered to evaluate persistent nasal or throat symptoms, swelling, unexplained facial pain, or suspected infection. It can also help assess masses, lymph nodes, trauma, or other structural changes in the nasopharynx and surrounding tissues.
How is the test performed?
You will lie on a CT scanner table while X-ray images are taken from different angles. IV contrast is usually injected into a vein in your arm, and you may be asked to hold still or briefly hold your breath during the scan.
How do I prepare for the test?
Tell your care team about kidney problems, previous contrast reactions, allergies, pregnancy or possible pregnancy, and any medications or conditions that affect imaging. Follow the facility's instructions, which may include avoiding food or drinking only clear liquids for a period before the scan.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Abnormal findings may include enlargement or narrowing of the airway, thickened tissues, fluid, inflammation, enlarged lymph nodes, or a mass in the nasopharynx. These findings may be associated with infection, inflammation, trauma, or a tumor, but the scan alone usually does not determine the cause. A radiologist will interpret the images, and your clinician will explain the results in the context of your symptoms and other tests.
Short name
CT nasopharynx with IV contrast
Frequently asked questions
Is this CT scan the same as a routine head CT?
Will I feel the IV contrast?
How long does the test take?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
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.
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