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CT Scan of the Bladder With Contrast

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

A CT scan uses X-rays and contrast to create detailed images of the bladder and nearby structures, helping evaluate urinary symptoms and abnormalities.

Quick summary

["This scan can identify bladder abnormalities such as masses, stones, inflammation, or obstruction."]

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

Key facts at a glance

LOINC
79094-9
Short code
CT Bladder W contr IUB
Synonyms
CT Bladder W contr IUB
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 contrast-enhanced CT scan of the bladder creates detailed cross-sectional images of the bladder and surrounding pelvic organs. It may be used to investigate blood in the urine, painful urination, trouble emptying the bladder, recurrent infections, or an abnormal finding on another imaging test.

Why might I need this test?

Your clinician may order this scan to evaluate a suspected bladder mass, stone, inflammation, diverticulum, injury, or blockage. It can also help assess how the bladder and nearby urinary structures relate to other pelvic conditions.

How is the test performed?

You lie on a table while a CT scanner uses X-rays to take pictures. Contrast may be provided through an intravenous line or placed directly into the bladder, depending on the specific protocol and the reason for the examination.

How do I prepare for the test?

Follow the imaging center's instructions about eating, drinking, and taking medicines. Tell the staff if you have had an allergic reaction to contrast, have kidney disease, are pregnant or may be pregnant, or have recently received contrast for another scan.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Abnormal findings may indicate a bladder mass, stone, inflammation, infection-related changes, diverticulum, or obstruction of urine flow. The appearance of a mass may require further evaluation and sometimes tissue sampling. Your clinician will interpret the scan together with your symptoms, examination, and other test results.

Short name

Bladder CT with contrast

Frequently asked questions

Does this test use radiation?
Yes. A CT scan uses a controlled dose of X-ray radiation to create detailed images.
Is bladder CT with contrast the same as a CT scan with IV contrast?
Not always. Depending on the examination protocol, contrast may be given through a vein or instilled directly into the bladder.
Will I need to empty my bladder during the scan?
The imaging staff will tell you when to empty your bladder, which may be before the scan or during the examination if bladder filling is required.
  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