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MRI of the Kidneys, Bladder, and Collecting System, With and Without Intravenous Contrast (Deprecated Order)

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

An MRI creates detailed images of the kidneys, bladder, and collecting system, sometimes before and after an IV contrast injection.

Quick summary

["This imaging test helps doctors evaluate the kidneys and urinary tract for structural or functional abnormalities."]

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

Key facts at a glance

LOINC
30677-9
Short code
Deprecated KD-Bl+CS MRI W+WO contr IV
Synonyms
Deprecated KD-Bl+CS MRI W+WO 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
mri
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 imaging, or MRI, uses a strong magnetic field and radio waves to create detailed pictures. This study evaluates the kidneys, bladder, and the collecting system that carries urine from the kidneys to the bladder.

Why might I need this test?

A clinician may order this MRI to investigate urinary symptoms such as pain, blood in the urine, difficulty urinating, or changes in kidney function. It may help identify masses, stones, inflammation, infection, obstruction, or other abnormalities of the urinary tract.

How is the test performed?

You will lie on a table that moves into the MRI scanner. The technologist may take images before and after an IV injection of gadolinium-based contrast, which helps certain tissues and abnormalities appear more clearly. The scan usually does not use ionizing radiation.

How do I prepare for the test?

Follow the clinic's specific instructions about eating, drinking, and taking medicines. Tell the care team if you have metal implants, a pacemaker, kidney disease, prior contrast reactions, or allergies to contrast; also tell them if you are pregnant or may be pregnant.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Kidney and urinary tract MRI

Frequently asked questions

Does this MRI use radiation?
No. MRI uses a magnetic field and radio waves rather than ionizing radiation, although an IV contrast medication may also be given.
What if I am allergic to iodine-based contrast?
Tell the imaging team before the appointment. Iodine allergy does not automatically mean you cannot receive the gadolinium-based contrast used for MRI, but the team should review any prior contrast reaction.
Why does the order say “deprecated”?
This means the source order or code is marked as outdated. The imaging department can confirm the current protocol, body areas, and whether contrast is still required before the scan.
  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