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Magnetic Resonance Angiography, Upper and Lower Extremities — with Intravenous Contrast

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

An MRA uses magnetic resonance imaging and IV contrast to visualize blood vessels in the upper and lower extremities and help evaluate narrowing, blockages, or aneurysms.

Quick summary

["This imaging test creates detailed pictures of the arteries in your arms or legs to evaluate blood flow and identify vascular problems."]

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

Key facts at a glance

LOINC
105147-3
Short code
MRA UE ves-L W contr IV
Synonyms
MRA UE ves-L 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 (MRA) is an imaging test that uses strong magnetic fields and radio waves to show the blood vessels in the upper and lower extremities. Intravenous contrast may be given to make the arteries easier to see.

Why might I need this test?

MRA may be ordered to evaluate symptoms such as a weak or cold limb, pain while walking, or a pulse that feels abnormal. It can also help assess known or suspected narrowing, blockage, aneurysm, clot, or other blood-vessel conditions.

How is the test performed?

You will lie on a table inside a magnetic resonance scanner while images are taken. If contrast is used, it is injected into a vein, usually in your arm; the scan may then be repeated with and without contrast. The procedure does not use ionizing radiation.

How do I prepare for the test?

Follow the imaging center's instructions about eating, medications, and driving. Remove jewelry, metal accessories, and items containing magnetic material. Tell the care team if you have a contrast allergy, kidney disease, are pregnant, or may be pregnant, because these factors can affect the procedure or contrast use.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

MRA with IV contrast

Frequently asked questions

Is MRA the same as a regular MRI?
MRA is a specialized form of MRI designed to show blood vessels. It creates images using magnetic fields and radio waves rather than ionizing radiation.
Why is contrast used during an MRA?
Intravenous contrast helps make blood vessels and areas near them more visible on the images. The care team will confirm whether contrast is appropriate for you.
Will I feel anything during the MRA?
The scanner may make loud knocking or ringing sounds, and the table may feel restrictive, but the scan itself is generally painless. Injecting contrast can briefly cause a warm sensation or a metallic taste.
  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