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Bilateral Kidney X-Ray Tomography, 3 Views — Intravenous Contrast

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

An X-ray imaging test that uses intravenous contrast to examine both kidneys and the urinary tract from three views.

Quick summary

["This test uses contrast-enhanced X-rays to evaluate the kidneys and urinary tract for structural abnormalities."]

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

Key facts at a glance

LOINC
30760-3
Short code
XR tomo Kdny-Bl 3V W contr IV
Synonyms
XR tomo Kdny-Bl 3V 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
xr-tomography
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 an X-ray-based imaging test of both kidneys. Intravenous contrast is given to help show the kidneys, urine-collecting structures, and urinary tract more clearly.

Why might I need this test?

It may be ordered to investigate kidney stones, urinary obstruction, swelling, unusual anatomy, trauma, or a suspected mass. It may also be used when other imaging has not provided enough information.

How is the test performed?

You usually lie on the X-ray table while an IV line is placed and contrast is injected. The technologist then takes three X-ray views so the kidneys and urinary tract can be examined from different angles.

How do I prepare for the test?

Follow the imaging center's instructions, which may include fasting or special medication management. Tell the care team about iodine or contrast allergies, kidney disease, pregnancy possibility, and all medicines you take, including metformin if applicable.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Abnormal findings may indicate kidney stones, urinary obstruction, swelling, infection-related changes, cysts, trauma, or a kidney mass. Results are interpreted together with symptoms, laboratory tests, and other imaging. A normal study does not rule out every kidney or urinary tract condition.

Short name

Kidney X-ray with IV contrast

Frequently asked questions

What does this test show?
It shows the structure of both kidneys and parts of the urinary tract. Contrast can make the kidneys and urine-collecting passages easier to see on X-ray.
Will I need intravenous contrast?
Yes, this version of the test uses iodinated contrast given through a vein. The center will review allergy history and kidney function before proceeding.
Is this the same as a CT scan?
No. It is an X-ray-based tomography study, not a CT scan, although CT may be used instead for some urinary tract conditions.
  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