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Magnetic Resonance Imaging (MRI) Without Contrast

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

An MRI uses magnetic fields and radio waves to create detailed images without ionizing radiation or injected contrast.

Quick summary

["This imaging test provides detailed internal images without the use of contrast dye."]

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

Key facts at a glance

LOINC
30676-1
Short code
Deprecated KD-Bl+CS MRI WO contr
Synonyms
Deprecated KD-Bl+CS MRI 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
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, creates detailed pictures of organs, soft tissues, bones, and other internal structures. This version is performed without injected contrast dye. The exact body region is not clear from the abbreviated identifier, which is also marked as deprecated.

Why might I need this test?

A healthcare professional may order MRI without contrast to evaluate unexplained pain, swelling, injury, or the appearance of an internal structure. It may also be used to follow an existing condition or check the result of another imaging study.

How is the test performed?

You will lie on a narrow table inside a large scanner. The machine makes clicking, tapping, or humming sounds, and you may be asked to remain still or hold your breath briefly. No ionizing radiation is used.

How do I prepare for the test?

Follow the instructions provided by the imaging center. Remove jewelry, watches, hairpins, and other metal objects, and tell the care team about implants, hearing devices, medication patches, or a possible pregnancy. You may be asked to change into a gown or clothing without metal.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

MRI without contrast

Frequently asked questions

Does this MRI use contrast dye?
No. The identifier specifies MRI without contrast, so no intravenous contrast dye is expected. If your imaging center says otherwise, confirm the order because some MRI protocols include contrast.
Is MRI safe if I have metal in my body?
Many modern implants and metal objects are MRI-compatible, but every case must be checked. Tell the care team about pacemakers, spinal devices, hearing implants, joints, pins, or other metal before entering the scanner.
Will I know the results right after the scan?
A radiologist usually reviews the images and sends a report to your ordering clinician. Your clinician can explain the findings and discuss any follow-up testing or treatment.
  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