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CT Scan of the Parotid Gland Without Contrast

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

A CT scan creates detailed images of the parotid gland, the largest salivary gland, to evaluate swelling, masses, inflammation, or duct obstruction.

Quick summary

["This CT scan uses no IV contrast to evaluate the parotid gland and nearby structures for abnormalities."]

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

Key facts at a glance

LOINC
37280-5
Short code
CT Parotid gland WO contr
Synonyms
CT Parotid gland WO contr
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 parotid gland CT scan uses X-rays and a computer to create cross-sectional images of the parotid gland, which is located in front of each ear and helps produce saliva. It is performed without intravenous contrast dye.

Why might I need this test?

This test may be recommended to investigate a lump, persistent swelling, pain, inflammation, infection, or blockage of a salivary duct. It can also help characterize a finding seen during a physical examination or another imaging study.

How is the test performed?

You will lie on a table while a CT scanner directs X-rays around your head and neck. The images are usually completed quickly, and a radiologist interprets them and sends the report to your healthcare professional.

How do I prepare for the test?

No contrast dye is used, so there is generally no special preparation or fasting requirement. Follow any instructions from the imaging center, remove metal items near the scanned area, and tell the staff if you are pregnant, may be pregnant, or have mobility or breathing concerns.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Abnormal findings may include a mass, inflammation, infection, fluid collection, or obstruction of the salivary duct. The scan can help show the size and location of a finding and whether nearby tissues are involved, but the results are interpreted together with your symptoms, examination, and other tests.

Short name

Parotid Gland CT Without Contrast

Frequently asked questions

Is contrast dye used for this CT scan?
No. This test is performed without intravenous contrast dye.
Does a parotid gland CT scan diagnose a specific condition?
No single finding is usually diagnostic by itself. The scan can identify and characterize abnormalities, while your healthcare professional considers symptoms and other test results to determine the cause.
Is the CT scan painful?
The scan itself is generally painless, although you must remain still inside the scanner. Some people feel confined or uncomfortable, and the technologist can provide guidance during the procedure.
  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