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CT AP Pelvis and Vesical (Urinary Bladder), With and Without Intravenous Contrast

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

A CT scan of the pelvis and urinary bladder performed with and without IV contrast to evaluate pelvic structures, the urinary tract, and surrounding bones.

Quick summary

["This CT scan uses x-rays and sometimes IV contrast to examine the pelvic organs, urinary bladder, and nearby bones."]

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

Key facts at a glance

LOINC
30623-3
Short code
CTA Pelvis ves WO+W contr IV
Synonyms
CTA Pelvis ves WO+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-angio
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?

This is a computed tomography (CT) scan of the pelvis and urinary bladder. Images may be taken before and after intravenous contrast is given. The imaging center confirms the exact areas covered and contrast protocol.

Why might I need this test?

A pelvic CT may be ordered to investigate urinary symptoms, suspected stones, infection, injury, or an abnormal mass. It can also show the bladder, reproductive organs, bowel, blood vessels, lymph nodes, and pelvic bones.

How is the test performed?

You lie on a padded table while a CT scanner rotates around you and creates detailed images. If contrast is used, it is usually injected through an IV in your arm, and the scan may include images before and after the injection.

How do I prepare for the test?

Follow the imaging center's instructions, which may include avoiding food or drinks for several hours. Tell the staff about contrast allergies, kidney disease, pregnancy, or medications such as metformin, because these may affect the preparation or use of contrast.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

The scan can identify or evaluate urinary stones, bladder or kidney abnormalities, infection-related changes, masses, and injuries. It may also reveal problems involving pelvic organs, blood vessels, lymph nodes, or bones. Findings are interpreted in the context of your symptoms and other tests.

Short name

CT pelvis and bladder

Frequently asked questions

Is this test the same as a standard x-ray?
No. CT uses multiple x-ray images and computer processing to create more detailed cross-sectional pictures of the pelvis and bladder.
Why might the scan be repeated after contrast is given?
Contrast can improve the visibility of blood vessels, organs, and some abnormalities. The timing and reason for the additional images depend on the protocol ordered.
Will I need to drink a contrast liquid?
Many pelvic CT scans use only IV contrast, but some protocols include oral contrast. The imaging center will provide specific instructions before the appointment.
  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