Skip to content

Computed Tomography (CT) of the Sacrum Without Contrast

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

A CT scan creates detailed images of the sacrum, the triangular bone at the base of the spine, without using intravenous contrast.

Quick summary

["This CT scan evaluates the sacrum for injuries and other structural abnormalities without intravenous contrast."]

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

Key facts at a glance

LOINC
36520-5
Short code
CT Sacrum WO contr
Synonyms
CT Sacrum 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 sacrum CT is an X-ray-based imaging test that produces detailed pictures of the sacrum and nearby structures. It is performed without injecting contrast material.

Why might I need this test?

This test may be ordered to evaluate sacral pain, trauma, suspected fractures, or abnormalities seen on other imaging. It can also help assess changes involving the sacrum and nearby tissues.

How is the test performed?

You will lie on a padded table while a CT scanner rotates around you and takes images. The scan is generally quick, and a radiologist reviews the images and sends a report to your clinician.

How do I prepare for the test?

Wear comfortable, loose clothing and tell the imaging staff if you are pregnant or may be pregnant. Because this test uses no contrast, you normally do not need to stop eating, drinking, or taking medicines unless your clinician gives different instructions.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

CT Sacrum Without Contrast

Frequently asked questions

Does this CT scan use contrast material?
No. The test name indicates that it is performed without intravenous contrast.
Is a sacrum CT the same as a standard CT scan?
It uses the same CT technology but focuses specifically on the sacrum and surrounding areas.
Is the test painful?
The scan itself is usually painless. You may be asked to remain still and, in some cases, briefly hold your breath while the images are taken.
  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