CT Abdomen and Pelvis Without Contrast
A CT scan that uses X-rays to create detailed images of the abdomen and pelvis without iodinated contrast.
["This CT scan evaluates abdominal and pelvic structures without the use of iodinated contrast."]
Key facts at a glance
- LOINC
- 36952-0
- Short code
- CT Abd+Pelvis WO contr
- Synonyms
- CT Abd+Pelvis 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?
Computed tomography (CT) creates cross-sectional images of the abdomen and pelvis using X-rays. In this test, iodinated contrast is not injected, so the images show the size, shape, and density of organs and nearby structures without contrast enhancement.
Why might I need this test?
A noncontrast CT may be used to evaluate unexplained abdominal or pelvic pain, identify kidney stones, examine certain masses or fluid collections, and assess some conditions affecting the bowel or other internal structures. Your clinician will explain the specific reason for the scan.
How is the test performed?
You lie on a padded table that moves through a CT scanner while X-ray images are taken. The scan is usually brief and does not require an injection. You may be asked to hold still or follow breathing instructions so the images are clear.
How do I prepare for the test?
Follow the preparation instructions provided by the imaging center. Wear clothing without metal fasteners and tell the technologist if you are pregnant, may be pregnant, or have had a recent CT scan. Because iodinated contrast is not used, there is generally no need for a contrast-related diet, although oral contrast or special instructions may still be specified for some examinations.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Abnormal findings may include kidney stones, fluid collections, bowel or organ abnormalities, suspicious masses, or changes involving bones and blood vessels. Some conditions can look similar without contrast, so the radiologist may recommend additional imaging. The results should be interpreted by your clinician in the context of your symptoms and medical history.
Short name
Noncontrast CT Abdomen/Pelvis
Frequently asked questions
Does this CT scan use contrast?
Is a noncontrast CT scan safe?
How soon will the results be available?
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