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Magnetic Resonance Angiography/Urography with Intravenous Contrast

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

An MRI-based imaging study that uses intravenous contrast to examine blood vessels and the urinary tract. The exact anatomy and protocol should be confirmed with the ordering clinician.

Quick summary

["This MRI uses injected contrast to help identify problems involving blood vessels or the urinary tract."]

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

Key facts at a glance

LOINC
24549-8
Short code
MRA UE ves W contr IV
Synonyms
MRA UE ves 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
mr-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?

Magnetic resonance angiography and urography are MRI techniques used to produce detailed pictures of blood vessels and the urinary tract. Intravenous contrast, usually a gadolinium-based agent, may be given through a vein to improve the images.

Why might I need this test?

These studies may be ordered to evaluate narrowed or blocked blood vessels, aneurysms, kidney or urinary tract abnormalities, stones, or other structural problems. They may also help plan treatment or track the result of another procedure.

How is the test performed?

You will lie on a table inside an MRI scanner while images are taken. If contrast is needed, a clinician will insert an IV line and administer it, then continue scanning for the amount of time required by the examination.

How do I prepare for the test?

Follow the instructions provided by the imaging center, especially any restrictions on eating, drinking, and taking medicines. Tell the care team about metal implants, medication patches, pregnancy or breastfeeding, and any prior reaction to MRI contrast; kidney disease should also be reported before contrast is given.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

MRA/MR Urography with IV contrast

Frequently asked questions

Is this test the same as a routine MRI?
It uses the same basic MRI technology, but the scan is tailored to evaluate blood vessels and/or the urinary tract, and contrast may be administered through an IV.
Will I need an IV for the contrast?
Usually. The contrast is injected into a vein, and the imaging team may monitor you briefly afterward for a reaction.
Can I have this test if I am pregnant or breastfeeding?
Notify the imaging center before the appointment. The care team will consider the clinical need, possible alternatives, and the risks and benefits of using contrast during pregnancy or breastfeeding.
  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